State:New|TargetRelease:No Target|icon_bug|icon_katana|database:public|Resolution:Fixed|BugID:393908|
Problem summary
If the state of the Viewer Visibility working set changes while the Scene Graph tab is frozen (hidden), for example by using the icon in the Hydra Viewer, the Scene Graph working sets column header decoration indicating the state of that working set is not correct on thaw (when you unhide the tab).
Steps to reproduce

Expected behaviour
The Viewer Visibility working set column header indicates the correct state of the working set (active in this case).
Actual behaviour
The Viewer Visibility working set column header is out of sync and does not indicate the correct state of the working set.
Workaround
Unknown (Refreshing the tab by pressing F5 does not update the column header to the correct state).
Reproduced by support
Katana 3.1v4 - Windows 10, CentOS 7
Katana 3.0v1 - Windows 10
Katana 2.5v1 - Windows 10
Katana 2.1v1 - CentOS 7
- Working set feature did not exist before Katana 2.1v1
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