Unreal Engine Issues

For a TMap with C++ enum keys, deleting and re-adding a map entry in the Editor can corrupt the map data.

When adding an entry to a TMap using UE's property editors, in most cases the new entry comes with a default-initialized key (if such key already exists, the insertion fails). The case of a UENUM de ...

Loading blueprint with soft actor reference during PIE corrupts data

The Soft Object Path loading code has special case logic for loading from Play In Editor, which tries to remap paths from the editor version of a map to instead point to an actor in a specific clien ...

LoadingScreen by MoviePlayer doesn't support Material in UE5.4

An assert crash is now triggered when set a widget using material to WidgetLoadingScreen of FLoadingScreenAttributes then call FDefaultGameMoviePlayer::SetupLoadingScreen(). The ensureMsgf in quest ...

RayTracingGeometry.UpdateRHI(); crashes at checkf BuildParams.IsEmpty()

When custom RayTracingGeometry is created, a crash is triggered by an assert at: Engine\Source\Runtime\Engine\Private\Rendering\RayTracingGeometryManager.cpp line 252  "Unexpected entries in BuildP ...

XR -ARKit - Tracked Planes are not attached to the real world objects when moving the camera around

When the user attempts to place an object on a tracked plane it slides around the environment not staying in the expected place. Using the ARDebugcheck project with the show planes option you can se ...

Crash when locate_bound_objects is called

This has been tested internally using an editor utility widget yielding the same results. That small project is attached. BoundingObjectTest. 1) Open the project 2) Run the Editor Utility Widget ...

Cached camera component on LevelSequencePlayer is null

PackedLevelActors are not updated when changing some properties

Packed level actors may not be updated after changing certain properties. Workaround: reload the level containing the PLA. ...

Editor crash when searching in Add Object menu after creating a Niagara System asset in the Motion Design editor mode

Wires to PCG nodes with translated properties are cut

Some PCG nodes have translated properties, which will cause wires to be cut. This is why things PCG biome sample maps do not work correctly in CJK language settings. The workaround is to set the lan ...