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Posted to dev@cordova.apache.org by "Guy Nesher (JIRA)" <ji...@apache.org> on 2012/08/19 22:05:38 UTC
[jira] [Created] (CB-1262) Page transition after a scroll creates a
black flicker
Guy Nesher created CB-1262:
------------------------------
Summary: Page transition after a scroll creates a black flicker
Key: CB-1262
URL: https://issues.apache.org/jira/browse/CB-1262
Project: Apache Cordova
Issue Type: Bug
Components: iOS
Affects Versions: 2.0.0
Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
Reporter: Guy Nesher
Assignee: Shazron Abdullah
When I user navigates to a new page (backbone simply replaces the html of the main div) after scrolling the entire screen flickers black for a split second.
I'm only able to reproduce this problem on the actual phone (works fine on the simulator) and the problem does not happen when I load the page outside of phonegap (browser).
I can supply example code if needed.
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[jira] [Commented] (CB-1262) Page height change causes flickr after
scroll
Posted by "Guy Nesher (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13442420#comment-13442420 ]
Guy Nesher commented on CB-1262:
--------------------------------
Just wanted to update the css fix has no been tested across several devices and works fine.
Thanks for the help
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Andrew Grieve
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Commented] (CB-1262) Page height change causes flickr after
scroll
Posted by "Andrew Grieve (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438386#comment-13438386 ]
Andrew Grieve commented on CB-1262:
-----------------------------------
Shoot, sorry for messing that up on you. Just tried it myself on a new project and got the same error. I've checked in a fix to it (just removed that check). Feel free to update and try again, or moving the call to setJsToNativeBridgeMode until after the deviceready event should work as well.
setting -webkit-backface-visibility on a node enables HW-accelerated drawing of it. If this bridge mode iframe doesn't help at all, try making sure that all nodes that are children of a hw-accelerated element also have hw-acceleration enabled. Another common way to do this is to set -webkit-transform: translate3d(0,0,0) on them.
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Andrew Grieve
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Commented] (CB-1262) Page height change causes flickr after
scroll
Posted by "Guy Nesher (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438104#comment-13438104 ]
Guy Nesher commented on CB-1262:
--------------------------------
Thanks,
Can you tell me which file/line the new code should go into?
Also I'm not using accelerated scrolling at the moment.
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Andrew Grieve
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Commented] (CB-1262) Page height change causes flickr after
scroll
Posted by "Guy Nesher (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438248#comment-13438248 ]
Guy Nesher commented on CB-1262:
--------------------------------
I can provide the project I'm working on (tell me where to send it) I'm trying to create a simpler example as well
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Andrew Grieve
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Commented] (CB-1262) Page height change causes flickr after
scroll
Posted by "Guy Nesher (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438186#comment-13438186 ]
Guy Nesher commented on CB-1262:
--------------------------------
I've got a slightly different question then - I've got the same app running using jqm without this flicker and from what I understand Sencha touch doesn't experience this bug either.
What are they doing differently?
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Andrew Grieve
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Closed] (CB-1262) Page height change causes flickr after
scroll
Posted by "Guy Nesher (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Guy Nesher closed CB-1262.
--------------------------
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Andrew Grieve
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Assigned] (CB-1262) Page height change causes flickr after
scroll
Posted by "Andrew Grieve (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andrew Grieve reassigned CB-1262:
---------------------------------
Assignee: Andrew Grieve (was: Shazron Abdullah)
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Andrew Grieve
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Commented] (CB-1262) Page height change causes flickr after
scroll
Posted by "Guy Nesher (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438256#comment-13438256 ]
Guy Nesher commented on CB-1262:
--------------------------------
Downloaded latest build and added the code you suggested.
I get an alert saying: "Viewcontroller not correctly initialized for XHR mode"
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Andrew Grieve
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Resolved] (CB-1262) Page height change causes flickr after
scroll
Posted by "Guy Nesher (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Guy Nesher resolved CB-1262.
----------------------------
Resolution: Not A Problem
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Andrew Grieve
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Commented] (CB-1262) Page height change causes flickr after
scroll
Posted by "Kerri Shotts (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438281#comment-13438281 ]
Kerri Shotts commented on CB-1262:
----------------------------------
If you want to send me some code, you can at kerrishotts@gmail.com. I would, of course, tread it with confidentiality.
backface-visibility can solve a lot of oddball issues (especially on Anroid), but it's odd (to me) that you have to set it on /everything/. I would have expected a need only on the scrolling area. Do you have translate3d on every element?
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Andrew Grieve
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Commented] (CB-1262) Page height change causes flickr after
scroll
Posted by "Guy Nesher (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438056#comment-13438056 ]
Guy Nesher commented on CB-1262:
--------------------------------
I might be missing something here (not an iOS developer) but I'm going to assume Cordova is creating the iframe? I'm also not sure what the accelerated scrolling feature and how to enable/disable it.
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Andrew Grieve
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Commented] (CB-1262) Page height change causes flickr after
scroll
Posted by "Andrew Grieve (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438164#comment-13438164 ]
Andrew Grieve commented on CB-1262:
-----------------------------------
Any time after the <script src="cordova.js"></script> will work.
Yeah, this is by no means a sure fix. I'd say more of a shot-in-the-dark.
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Andrew Grieve
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Commented] (CB-1262) Page height change causes flickr after
scroll
Posted by "Guy Nesher (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438273#comment-13438273 ]
Guy Nesher commented on CB-1262:
--------------------------------
-webkit-backface-visibility seems to solve the issue, but only works when I apply it to everything *{} applying to the specific div failed.
I'm leaving this issue open for another couple of hours (testing on a few more devices).
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Andrew Grieve
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Commented] (CB-1262) Page height change causes flickr after
scroll
Posted by "Andrew Grieve (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438071#comment-13438071 ]
Andrew Grieve commented on CB-1262:
-----------------------------------
Yes, Cordova creates an iframe and uses it to talk to the Objective-C side of the app. This new bridge mode uses an XHR instead of an iframe.
HW accelerated scrolling mean using -webkit-transform: translate3d(x,y,0) to scroll an element (instead of setting it's scrollX/scrollY)
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Andrew Grieve
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Updated] (CB-1262) Page height change causes flickr after
scroll
Posted by "Guy Nesher (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Guy Nesher updated CB-1262:
---------------------------
Description:
Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
I'm unable to reproduce this within the ios browser.
was:
When I user navigates to a new page (backbone simply replaces the html of the main div) after scrolling the entire screen flickers black for a split second.
I'm only able to reproduce this problem on the actual phone (works fine on the simulator) and the problem does not happen when I load the page outside of phonegap (browser).
I can supply example code if needed.
Summary: Page height change causes flickr after scroll (was: Page transition after a scroll creates a black flicker)
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Shazron Abdullah
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Commented] (CB-1262) Page height change causes flickr after
scroll
Posted by "Braden Shepherdson (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438047#comment-13438047 ]
Braden Shepherdson commented on CB-1262:
----------------------------------------
I encountered this problem in iOS Safari when using an iframe and hardware accelerated scrolling. Whenever the content of the iframe changes, the whole frame flickers white. It's a terrible cause of jank.
The solution, I'm afraid, is "don't do that then". I don't know of any cure but eliminating iframes or accelerated scrolling. Trying out the new, iframeless bridge on iOS might be a worthwhile experiment.
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Shazron Abdullah
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Commented] (CB-1262) Page height change causes flickr after
scroll
Posted by "Andrew Grieve (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438052#comment-13438052 ]
Andrew Grieve commented on CB-1262:
-----------------------------------
To test out the iframeless bridge mode, add line to your start-up:
var exec = cordova.require('cordova/exec');
exec.setJsToNativeBridgeMode(exec.jsToNativeModes.XHR_OPTIONAL_PAYLOAD);
This feature/experiment is *days* old, so you'll need to use tip-of-tree to try it.
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Shazron Abdullah
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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[jira] [Commented] (CB-1262) Page height change causes flickr after
scroll
Posted by "Kerri Shotts (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CB-1262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438247#comment-13438247 ]
Kerri Shotts commented on CB-1262:
----------------------------------
Is there some code that duplicates the issue? I've never seen this behavior as specified on my iPad 1/3 or iPhone 4. I /have/ seen the tiling issue where ios is trying to send multiple textures to the gpu (because the element is > screen size).
> Page height change causes flickr after scroll
> ---------------------------------------------
>
> Key: CB-1262
> URL: https://issues.apache.org/jira/browse/CB-1262
> Project: Apache Cordova
> Issue Type: Bug
> Components: iOS
> Affects Versions: 2.0.0
> Environment: I'm running ios 5.1 (tested on 3gs and 4gs) using backbone.js and zepto.js
> Reporter: Guy Nesher
> Assignee: Andrew Grieve
>
> Deleting the content of a long list (ul) after scrolling from the top will create a short flicker which also effects other elements (header/footer - doesn't matter if they are fixed or not).
> I'm unable to reproduce this within the ios browser.
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