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[severity:I'm unable to use this version]
I create a new WinForms project with .NET 5.0, either with C# or VB.NET.
I add a CheckedListBox to the form and add some items via the designer.
With a Button-Click I change ShowInTaskbar for the form to False.
The items in the CheckedListBox are not visible anymore, even if I force a redraw of the form.
With a .NET-framework 4.x project, everything works fine (all items are shown).

before changing ShowInTaskbar

after changing ShowInTaskbar

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