Unreal Engine Issues

Crash when adding Rectangle Lights to a game with multiple players while Raytracing is enabled

A user reported this issue to us through Salesforce. They initially said it crashed with both Spot Lights and Rectangle Lights, but I was only able to repro with Rectangle lights. Additionally, I di ...

Layer blending not detecting compilation errors correctly when linked to material functions

This may be more of an error when detecting the input when layer blending is being used (as we've seen in other functions), rather than it necessarily being an error with the compilation of the stan ...

Subobject delimiter replacement in ResolveName can cause previously valid strings to exceed NAME_SIZE

ResolveName will replace the subobject delimiter (colon) with two periods. This increases the length of the string, and can cause asserts due to the string exceeding NAME_SIZE even when the name was ...

Camera manager will not tick if the game is paused on begin play or possessed events

This is an interesting bug because it is only happening on BeginPlay. I guess that there is some order of operations that the camera manager uses during creation that will stop if the game is paused ...

When the camera is set as a child actor and the Look at of the camera is set to the parent, the transformation keeps changing.

Mesh LOD Coloration mode does not work with EyeAdaptation node

"Primitives with unbuilt interactions" not clearing after lighting scene rebuild

Regression No, according to affect version 4.26 and 4.27 [2021.10.29-17.01.06:085][830]Primitives with unbuilt interactions: 6[2021.10.29-17.01.06:085][830] Primitive FoliageInstancedStaticMeshComp ...

USkeletalMesh::SetSkeleton function is not a BlueprintSetter

I have a fix ready for this in cl: 17967661 ...

FBXUVs can create null entries that will assert later

Need to make sure we support nullptr entries or make sure we do not create such null entries. ...

Sequencer frame range progression is not continuous

The end of the level visibility section places a DeterminismFence. This causes the issue. The fence clips the frame range and produces a discontinuous frame ranges, e.g. 23201~24000, then 24001~24 ...