Content disappears when LayoutAnchorable is pinned

[alexeygritsenko]

Hi, I can't figure out what's going on. When I pin a tab, its content stops being visible. If I unpin it again, then I can see the content again.
I made a quick gif video:

Code of this layout:

<avalonDock:LayoutAnchorable ContentId="toolWindow2" Title="Code Explorer">
    <TreeView x:Name="TreeViewCodeExplorer">
        <TreeViewItem Header="MS SQL Server" />
        <TreeViewItem Header="MySQL" />
        <TreeViewItem Header="MongoDB" />
        <TreeViewItem Header="Postgres" />
    </TreeView>
</avalonDock:LayoutAnchorable>

Environment:

• App: wpf .net 4.8
• Extended.Wpf.Toolkit: 4.6.1
• Visual Studio 2022
• OS: Windows 10 Pro x64

[zhongruijia]

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