[jira] [Created] (FLEX-34545) tree content does not display sometimes

["Bi Jane Jia (JIRA)" <ji...@apache.org>]

Bi Jane Jia created FLEX-34545:
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             Summary: tree content does not display sometimes
                 Key: FLEX-34545
                 URL: https://issues.apache.org/jira/browse/FLEX-34545
             Project: Apache Flex
          Issue Type: Bug
          Components: mx: Tree
    Affects Versions: Apache Flex 4.11.0
            Reporter: Bi Jane Jia


STEPS TO REPRODUCE:
===================
1. import the attached project and run it.
2. scroll down and find b1 in the tree. open b1-> b1_1 and select b1_1_1.
3. click "set moving target" button and confirmed "moving to b1_1_1" is displayed.
4. move the scroller to make sure b1_1 is the first item you can see in the tree.
5. click "move" button

RESULT:
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The tree content is not displayed and you can only see a blank view.

EXPECTED:
=========
The tree content should display correctly.

WORKAROUND:
===========
1) increase height of the mx:tree component 
or
2) add tree.validateNow(); in the menuToMenu() function

The problem does not happen with other items in the upper part of the tree such as a1_1_1.



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