ULoadingScreenManager::ShowLoadingScreen() causes a nested UWorld::Tick() that leads to a crash when using CommonLoadingScreen in Lyra.

Encountering a crash in Lyra when you hit PIE if you have an animation montage document open with an animation segment selected and the preview scene visible in the animation segment details panel.

The crash can be prevented when adding the following to the DefaultGame.ini:

[/Script/CommonLoadingScreen.CommonLoadingScreenSettings]
ForceTickLoadingScreenEvenInEditor=False

Without this setting it is possible for ULoadingScreenManager::ShowLoadingScreen() to cause a nested UWorld::Tick, which ultimately leads to the crash.

Open Lyra project:

• Open any montage (AM_MM_Dash_Forward)
• Move the animation document tab outside into its own window.
• Select an animation clip in the montage to have the viewport preview appear on the details panel.
• Now start a PIE session. This will cause the crash.

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