Unreal Engine Issues
Unreal Engine Issues
AI MoveTo Blueprint node will zero velocity on Pawn when called, causing a freeze if the Pawn is already moving
UE - AI - Oct 4, 2016AI MoveTo Blueprint node will zero velocity, causing a stop when a new destination is set if the Pawn is currently moving. Regression: Yes Worked: 4.12.5 (CL 3039270) Broken: 4.13.1 (CL 3142249) F ...
PostRepNotifies may not always be called
UE - Networking - May 8, 2018FObjectReplicator::UpdateUnmappedObjects calls CallRepNotifies, but does not call PostRepNotifies. Further, the order of CallRepNotifies and PostNetReceive in FObjectReplicator::UpdateUnmappedObje ...
Filtering by collection is broken
UE - Editor - Content Pipeline - Content Browser - Mar 2, 2019This happens because the Collections module isn't loaded when the FFrontendFilter_TextFilterExpressionContext instance is created: , CollectionManager(FCollectionManagerModule::IsModuleAvailable() ...
Crash when launching dx12 for the first time with Rect Lights
UE - Rendering Architecture - RHI - Mar 20, 2019Users on the forums are hitting a crash on their initial launch of the engine into dx12. There is currently a workaround to load into the project with dx11 first, compile shaders, then youre fine to ...
VisionOS deferred renderer regression
UE - Platform - XR - Sep 11, 2024Deferred desktop renderer does not function correctly on visionOS. It did work in 5.4. One problem is the r.XRMSAAMode setting forcing 4 samples even when not using msaa, but there are other probl ...
Horde server fails to build Docker image
UE - Foundation - Horde - Server - Apr 1, 2025If you attempt to build the Horde server Docker image right now it fails unless you have some of the layers cached or a nuget proxy/cache that has cached some packages. JetBrains have renamed their ...
Rendering glitch when launching on Android
UE - Platform - Mobile - Aug 2, 2016https://answers.unrealengine.com/questions/462957/rendering-glitch-when-launching-on-android-ue413-p.html I was able to repro it on Nexus5 with Android 5.1.1. ...
Vive - Motion Controller Component - Low Latency Update Regression
UE - Platform - XR - May 22, 2019Motion Controller component attachments lag behind parent. Not happening on Oculus Rift Workaround: Set "Disable Low Latency Update" on your Motion Controller Components to 'true' User Sub ...
ParticlePosition doesn't use Previous values
UE - Niagara - Jan 9, 2024FHLSLMaterialTranslator::ParticlePosition does not return Previous information when request which can result in bad motion vector calculation. ...
Utility functions in UEdGraph_ReferenceViewer are no longer exposed
UE - Editor - Content Pipeline - Content Browser - Oct 29, 2018A number of utility functions are provided in UEdGraph_ReferenceViewer for building menu extenders. This class was originally included in the engine as part of the ReferenceViewer module, but was re ...