[jira] [Created] (FLEX-34634) DataGroup fires RendererExistenceEvent with a null renderer when an offscreen item is removed/replaced in the dataProvider

[Gareth Daniel Smith (JIRA)]

Gareth Daniel Smith created FLEX-34634:
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             Summary: DataGroup fires RendererExistenceEvent with a null 
renderer when an offscreen item is removed/replaced in the dataProvider
                 Key: FLEX-34634
                 URL: https://issues.apache.org/jira/browse/FLEX-34634
             Project: Apache Flex
          Issue Type: Bug
          Components: Spark: DataGroup
    Affects Versions: Apache Flex 4.13.0
            Reporter: Gareth Daniel Smith
            Priority: Minor


To me this looks like a bug in DataGroup.

It looks like a fairly easy fix. I think a null check is needed around the 
dispatchEvent call at: 
https://github.com/apache/flex-sdk/blame/930b545e0cfad5c7ae8f08cd29e21a144d08227b/frameworks/projects/spark/src/spark/components/DataGroup.as#L1766

I will attach a test case.



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