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https://issues.apache.org/jira/browse/FLEX-35044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15182870#comment-15182870
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Mark Kessler commented on FLEX-35044:
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Would you please provide a small test application that reproduces the problem.
> ComboBox don't set selectedItem correctly after resetting dataProvider
> ----------------------------------------------------------------------
>
> Key: FLEX-35044
> URL: https://issues.apache.org/jira/browse/FLEX-35044
> Project: Apache Flex
> Issue Type: Bug
> Components: Spark: ComboBox
> Affects Versions: Apache Flex 4.15.0
> Environment: Windows 10. Firefox 43.0.4. Flash Player 20.0.0.306
> debug version
> Reporter: FERNANDO TEIXEIRA BARROS
> Original Estimate: 10m
> Remaining Estimate: 10m
>
> I've recently migrate from Adobe Flex 4.5.1 to Apache Flex 4.15. Everything
> was fine, except from some bugs on Charts and this bug on combo.
> Issue: When I set a dataProvider to the combo, and then set the selectIndex,
> selectedItem was correctly setted.
> But after setting dataProvider again and setting the same selectedIndex, the
> selectedItem is now null.
> Workaround:
> Override dataProvider method on a new component based on ComboBox and setting
> "selectedItem = undefined" after setting super.dataProvider.
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