Commented Unassigned: Closing LayoutAnchorablePane docked as tabbed document with "X" button has no effect on ViewModel and it is not possible to show the panel again [22031]

This bug is easy to reproduce with original avalondock AvalonDock.MVVMTestApp (https://avalondock.svn.codeplex.com/svn/Version2.0/AvalonDock.MVVMTestApp),
(and it is present in WPF Extented Toolbox Avalon)
To reproduce just dock AvalonDock.MVVMTestApp "Properties" panel along with "Noname "document as tabbed document and click "X" button.
Comments: ** Comment from web user: mkrej **

Problem solved.
Thanks for Your help!