[echarts] 01/01: fix(custom): set ignore only if old child exists

[ov...@apache.org]

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ovilia pushed a commit to branch fix-custom
in repository https://gitbox.apache.org/repos/asf/echarts.git

commit f22be1926d17257705857b01e8dc534f741dfe93
Author: Ovilia <zw...@gmail.com>
AuthorDate: Mon Aug 1 10:56:11 2022 +0800

    fix(custom): set ignore only if old child exists
---
 src/chart/custom/CustomView.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/chart/custom/CustomView.ts b/src/chart/custom/CustomView.ts
index 215087b72..1b67dc7d9 100644
--- a/src/chart/custom/CustomView.ts
+++ b/src/chart/custom/CustomView.ts
@@ -1339,7 +1339,7 @@ function mergeChildren(
                 el
             );
         }
-        else {
+        else if (oldChild) {
             // If the new element option is null, it means to remove the old
             // element. But we cannot really remove the element from the group
             // directly, because the element order may not be stable when this


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