Unreal Engine Issues

LightMap is created exceeding [Packed Light and Shadow Map Texutre Size]

When LightBuild is performed with CornTestBox.umap of EngineTest, 4096 light maps are generated even though [Packed Light and Shadow Map Texutre Size] is 1024. The reason is that the asset's LightMa ...

Skeletal Meshes have physics collisions lag

Skeletal mesh's physics collision lag behind the actual mesh. It didn't matter if there was just a root bone or multiple bones/constraints. This doesn't happen when using static meshes. The effect ...

Crash on packaged game. 4.23 will not nativize a class that creates instanced properties inside itself

Description from the user: up to 4.23 properties nativize normally if they are written in C++ with the Instanced specifier. The discerning difference is that that there was no Blueprint Class itsel ...

Masked Mesh has significant performance hit on some android devices

LOD Picker does not update to reflect the correct Number of LODs in the Skeletal Mesh Editor

There seems to be an issue with the LOD Picker not updating after The LOD does not update to the default LOD0 or Auto LOD after Number of LODs changes, creating an invalid range for the currently se ...

Empty Mesh Sections with MergeActors Tool

Map Check will output the following error, which makes no sense: SM_FourCubes_1 - 1 element(s) with zero triangles in static mesh 'SM_FourCubes' ...

Doesn't update sound Attenuation if used sound Attenuation node at anim sequence editor.

There is a problem with the sound update when using "Sound Attenuation" in the Animation Editor. In the Animation Editor, if the mouse cursor is located in a viewport and you change the position of ...

Stereo layers with depth render translucency as black on Oculus Quest

[Link Removed] ...

Race condition in full builds of UE4 engine source

This is a race condition caused by how "Clean.bat", a batch file used during rebuilds, tries to manually rebuild the UnrealBuildTool project when it runs. This causes a spam of UnrealBuildTool build ...

HDRI Backdrop Actor not working on mobile

The new HDRI Backdrop actor does not appear to be functioning on mobile. ...