Loading game after start new game from menu make editor crash

[Rcurreli]

Hi, I'm experiencing a crash in the editor that might be related to other issues. This happens ONLY in the editor under specific conditions:

1)Start a new game from the menu map (using afterlevelload)
2)Save the game at the start of the main map
3)Load the saved game (which loads the main map again)

After SPUD calls WorldPackage = LoadPackage(nullptr, *LevelName, LOAD_None); at line 566 in SpudSubsystem.cpp, the game crashes every time with the following assertion failure:

Assertion failed: ActiveDataLayerNames.IsEmpty() && LoadedDataLayerNames.IsEmpty() [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\DataLayer\WorldDataLayers.cpp] [Line: 165]

The crash occurs only after starting a new game from the menu map.
If I start directly from the main map or load a previous save directly from the menu map, it works fine.
Also starting a new game from the main map (making play from here) and then loading works without issues.

When starting the new map, I noticed some data layers are activated momentarily before they are unloaded and the game starts normally. All data layers have their start runtime state set to unload, even in the editor. I don t know if could be this the cause, of course not happening in shipping build.

This issue is not blocking, but understanding the cause would help in testing the normal use case in the editor.