In my saved browser Layout 1 the folder tree is visible and the toolbar button shows depressed.
In my saved Layout 2 the folder tree is hidden.
Switching from Layout 1 to Layout 2 does not update the toolbar button to show that the folder tree is hidden. The button remains depressed, indicating that the folder tree is visible, but it isn't.
MP 0.25w: "Show tree" button not updated on restore layout
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