[FLEX-33724] Error in mx:DataGridBase.addClipMask() when using custom item renderer and locked columns

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Adobe Flex SDK 4.6 (Release), Apache Flex 4.10.0
• Fix Version/s: Apache Flex 4.11.0
• Component/s: mx: DataGrid
• Environment: Windows
• Assignee: Justin Mclean
• Reporter: Vitali Kabak
• Created: 10/Sep/13 09:37
• Updated: 17/Sep/13 14:27
• Resolved: 17/Sep/13 14:27

Description

When using MX DataGrid with custom item renderer and locked columns, an error is thrown after changing horizontalScrollPolicy.
See attached file for application example.

How to reproduce:
Run the app, click "Click Twice" button 2 times (not double-click).

Apache Flex 4.9.1 is also affected, but I didn't find it in the list.