Unreal Engine Issues

"Start Time" for sound play does not work on PS5

The start time offset property in level sequence for audio track does not work on PS5. And the start time property in Play Sound BP node does not work, neither. ...

Composure doesn't indicate why Level Layering is disabled when used in a World Partition level

Composure doesn't indicate why Level Layering is disabled when used in a World Partition level this is confusing some users who are not familiar with World Partition. ...

Fbx scene importer: memory corruption

Material Editor: Highlight/Isolate should warn user when using Nanite Mesh

Editor should visually warn the user that this feature doesn't work with Nanite, or that the Nanite Preview mesh needs to be enabled (or forcibly enable it when they attempt to use this option), oth ...

Wrong height from Chaos::FHeightField::GetHeightAt()

[MetaSounds] - Inputs, Outputs, and Variables are not allowing spaces in the member name

UE does not allow to have spacing for array in MetaSound PatchThis occurs in MetaSound Source as well Regression checked and occurs on //UE5/Release-5.1 @ CL 22805038 - P4V Repro Rate : 4/4 ...

Building Packed Level Actors causes references to break in the Packed level Actors' Blueprints

This is not a regression. Tested in //UE5/Release-5.0 CL 20979098 Building Packed Level Actors causes references to break in the Packed level Actors' Blueprints. Rerunning the Build > Pack Level Ac ...

Mirror Data Table is NOT added SyncMarker automatically when creating

Mirror Data Table is added rows about Bone, Curve, Notify when creating. But SyncMarker is ignored. The following codes can fix this issue. Engine/Source/Runtime/Engine/Private/Animation/MirrorDa ...

Clear FileItem cache when deleting files to prevent stale cached data

Should be straightforward, the UDN that reported this deletes all files using the FileItem interface so they can clear out the entry from the cache dictionary but there may be a way to just invalida ...

ProcessPriority performance consideration with Generation 12 Intel CPUs

It has been noted that the default BelowNormal process priority set in UnrealBuildTool is not handled well with the Gen 12 Intel CPUs as processes are only scheduled on the E-Cores which causes degr ...