Unreal Engine Issues and Bug Tracker (UE-203812)

Steps to Reproduce

Use the files attached to this report to replace the files in the Source\LyraGame\UI\Subsystem folder. This will give you debug text to display the current widgets in the layer stacks.
Compile and run the Lyra Editor Project.
Open the Front End level and run PIE.
In console enter 'showdebug'
After loading to the main menu, note the displayed debug output in the viewport.
Start a new game via Quickplay.
Once loaded into the game, pause and exit to the main menu using the pause menu.
When back at the main menu, note that the HUD widget W_ShooterHUDLayout_C is still loaded, but not active. Also notice that the front end menus are all duplicated in the UI.Layer.Menu stack.
Repeat steps 5-7 to cause the layer stacks to continually grow.

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-203812 in the post.

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Fixed

Fix Commit	32975058

The UI layer system in Lyra leaks widgets when changing level