Unreal Engine Issues
Unreal Engine Issues
Changing preview mesh appears to affect initial transforms of all control rigs in level viewport
UE - ACT Character - Control Rig - Apr 16, 2024It seems that switching the preview mesh in the control rig editor is affecting the initial transforms in the hiearchies of related control rigs in the level viewport. This seems to be due to the c ...
Clustering GeometryCollections in sleep state forces them to awake
UE - Runtime - Deformable - Mar 27, 2024The sleep state will be overwritten in ClusterUnionManager::UpdateAllClusterUnionProperties. Clustering using AClusterUnionActor results the same behavior as well. ...
MRQ Remote Render Audio is 30 seconds later than expected.
zComponent - Archive - Feb 29, 2024CL 17315409 Introduced a fix that relied on processing audio samples before a render. For remote renders this extra 30 seconds of audio processing seems to have made its way into the final results. ...
"Build All Levels" does not re-AddNavigationSystemToWorld
UE - Runtime - Character - Feb 28, 2024The Build All Levels editor action cleans up the world's NavDataSet (UNavigationSystemV1::NavDataSet) as pre-rebuild world cleanup by calling: SetNavigationSystem(nullptr); inside UWorld::Cleanu ...
USkeletalMeshComponent::HandleExistingParallelClothSimulation() calling WaitUntilTaskCompletes can trigger arbitrary task that modifies currently iterated UWorld::ComponentsThatNeedPreEndOfFrameSync
UE - Rendering - Architecture - Feb 23, 2024Context ActorComponents can schedule an end-of-frame update for themselves by calling UWorld::MarkActorComponentForNeededEndOfFrameUpdate. The UWorld will iterate all those actor components once pe ...
Node errors that block compilation aren't output in compiler results log
zComponent - Archive - Feb 7, 2024Errors from EdGraph nodes aren't being piped into the compiler results log. This can make it difficult to track down what's broken in larger rigs. ...
Bug with setting the ChildActorClass in ChildActorComponents in Blueprint
UE - Framework - Blueprint - Jan 10, 2024It's impossible to set it back to None. Also, if the original blueprint had something set in ChildActorClass, it will be impossible to set a placement of it to None. I looked at it briefly in the de ...
Startup Movies in Lyra Flicker and trigger ensure: "Only one system can use the SlateThread at the same time. GetMoviePlayer is not compatible with PreLoadScreen."
UE - Media Runtime - Media Framework - Dec 20, 2023When adding startup movies to Lyra, the movie playback flickers and an ensure conditions fails with the message: Ensure condition failed: bSuccess [File:D:\build\++UE5\Sync\Engine\Source\Runtime\M ...
Some post-processing passes sample outside of the viewport when using scene capture components
UE - Rendering - Features - Nov 29, 2023It looks like the SSAO shader does not clamp its sample space to the half view size for the two inputs "Ambient Occlusion" and "AmbientOcclusionSetup", leading to invalid data entering the edge of f ...
FPropertySoftPath::Resolve doesn't resolve c-array elements properly
UE - Framework - Nov 20, 2023a fix was proposed in the UDN but it needs to be tested and revised ...