Unreal Engine Issues
Unreal Engine Issues
Removing a transform track from the sequencer will no longer clean up spawnable actor when the sequencer is closed
UE - Anim - Sequencer - Feb 1, 2021Note : Reopening the level sequence causes ensure failed. (also see callstack) LogOutputDevice: Error: === Handled ensure: === LogOutputDevice: Error: Ensure condition failed: InstanceRegistry->I ...
When creating a new NiagaraSystem using existing system, the DefaultEffectType set in ProjectSettings is not reflected.
UE - Niagara - Jul 24, 2023When creating a new NiagaraSystem, the DefaultEffectType set in ProjectSettings should be reflected. If another EffectType is already set, it should be respected. The problem here is that when creat ...
Instance overlap functions for Foliage Instanced Static Meshes detects instances inconsistently
UE - World Creation - Worldbuilding Tools - Foliage - Apr 14, 2022Instance overlap functions for Foliage Instanced Static Meshes detects instances incorrectly. I was able to see this occur with both the Sphere and Box functions. In addition, I drew out debug sphe ...
WorldPartition RuntimeHashSet: non-deterministic URuntimePartitionPersistent UObject name causes unstable Cooked output (RuntimePartition:DebugColor)
UE - Engine Scaling - Streaming - HLOD - Jul 9, 2026During deterministic Cook / Package validation, the Cooked output of a WorldPartition map was found to vary non-deterministically between Cook runs. Diff detected in the DiffOnly Cook log:Serialize ...
Crash when resizing window using Quad Stereo Buffer
UE - Virtual Production - nDisplay - Oct 2, 2019We noticed crashes in our application when we attempted to resize a window or switch to full-screen mode. Hence, resizing windows and switching to full screen will result in a crash on Unreal Engine ...
FVulkanDynamicRHI::RHIReadSurfaceData incorrect for FLinearColor.
UE - Rendering - Architecture - RHI - Mar 4, 2024The FLinearColor implementation for FVulkanDynamicRHI is incorrect. FLinearColor stores 32 bit floats in linear space, while FColor stores 8 bit integers encoded with sRGB applied. The implementatio ...
Player Character does not collide with landscape
UE - LD & Modeling - Terrain - Landscape - Mar 8, 2015UPDATE: 3/9/2015 Additional Information: User on thread https://answers.unrealengine.com/questions/186928/landscape-collison-issues-recreatelandscapecollisi.html reported workaround did not fix e ...
[CrashReport] UE4Editor_Engine!UAnimSequenceBase::GetAnimationPose() [animsequencebase.h:148]
OLD - Anim - Aug 22, 2017This is an intermittent crash coming out of the 4.17.1 release. I have not been able to find any record of this occurring in 4.17.0, so it may actually be a regression with the hotfix. Users have ...
Crash occur when using AddSpawnableFromClass with BlueprintGeneratedClass specified
UE - Anim - Sequencer - Aug 13, 2019BlueprintGeneratedClass is not based UBleupint. So the following code is failed. bool UActorFactoryBlueprint::PreSpawnActor( UObject* Asset, FTransform& InOutLocation) { UBlueprint* Blueprint = ...
Crash on adding elements to a TMap property
Tools - Jul 25, 2019Adding elements to a TMap<int32, int32> causes the editor to crash if the TMap has a default value associated with it. Tested in 4.22 (CL - 4753647), 4.23 (CL - 7445012), 4.24 (CL - 7605614) ...