UMGs are rendered over the viewport's icons on UE5 editor

UMGs are rendered over the viewport's icons on UE5 and the icons cannot be visible and selected even if you detaches from the player controller.
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I confirmed this doesn't happen on UE4.
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1. download and open the attached sample
2. do PIE
3. detaches from the player controller (Eject)
4. You can see the editor's viewport icons are covered with a game UI and cannot slect all of them.