Unreal Engine Issues

Different instanced materials are seen as the same material due to GUID

See licensee description of the issue: The problem appears when I have two instanced materials with the same number of parameters. I've noticed that ShaderMapId has MaterialLayersParameterIDs where ...

Ensure when changing the Mip Gen Settings in a Texture 2D Array

When changing the Mip Gen Settings of a Texture 2D Array, several errors such as: Error: Corrupt texture [NewTexture2DArray]! Missing bulk data for MipIndex=0 appear in the output logs and an Ensure ...

RigElement names cannot be any CJK characters due to illegal characters

When Niagara is set to DesiredAge in Sequencer, the processing load increases after play

This does not happen in 4.25.4. It has been confirmed to occur with 4.26.2 and UE4main. After playback is complete, a large amount of stalls can be seen in Insight. ...

DFAO artefacts created by landscape painted invisible in cooked builds

Looks like the issue stems from the DistanceFieldBentNormalAO pass ...

Shader compilation error occurs when using values sampled from texture for Customized UV1

Shader compilation error occurs when using values sampled from texture for Customized UV1.　No problem when connected to Customized UV0. This problem compiles well if I change the value of Const to ...

[Quartz][Crash] - Subscribing to All Quantization Events and then playing a sound on all Quantization boundaries crashes the editor

Hit this when I made a blueprint and Subscribed to ALL quantization events instead of the one I was interested it and tried to use all of them as my Quantization Boundary. The alt title of this bug ...

Menus flash when being opened with application scale adjusted

When application scale is adjusted the menu bar menus will flash when they are opened. This issue is occurring in //UE5/Release-5.0-EarlyAccess Binary CL 16433597 This issue is NOT  occurring in // ...

Decals can't use TransformLocalPositionToWorld material node

Likely we just need to create a new macro to enable TransformLocalPositionToWorld and TransformLocalPositionToPrevWorld in alternative use cases such as this. ...

Nanite meshes swap materials during simulation

When enabling nanite on Quixel Bridge assests.  Materials sometimes randomize to other assets in the viewport during simulation or PIE.  This does not occur every time and may take a few tries.   T ...