Unreal Engine Issues
Unreal Engine Issues
Artifacts in imported GLB and GLTF files
TM - Interoperability - Mar 10, 2025Reported in SF [Link Removed] Client reports that many of their GLB and GLTF files they use appear with visual artifacts when imported to Twinmotion. These artifacts only appear in Twinmotion and n ...
[CrashReport][GPUCrash] UpdateRadianceCaches
UE - Graphics Features - Ray Tracing - May 19, 2025#25 crash out of 4823 in UE 5.7.1 on Windows#7 crash for UE - Graphics Features in UE 5.7.1 on Windows#3 crash for UE - Graphics Features - Ray Tracing in UE 5.7.1 on WindowsGPU Crash dump Triggered ...
Bandwidth usage of USceneComponent::RelativeLocation is too high
UE - Networking - Jun 22, 2017USceneComponent::RelativeLocation is an uncompressed FVector (3x32 bits replicated). Consider changing to FVector_NetQuantize100, or consider implementing custom serialization (with customizable qua ...
[CrashReport] UE4Editor_Engine!UMaterialExpression::GetOutputType() [materialexpressions.cpp:859]
UE - Rendering Architecture - Materials - Nov 21, 2017This is an infrequent crash in the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred. Source Context 849 uint32 UMaterialExpression::GetOutputT ...
Commonly used blueprint conversion functions should be promoted to top level category
UE - Gameplay - Blueprint - Nov 16, 2020Many useful blueprint utility nodes are buried in the Utility category and are not very discoverable by users. This leads to them choosing other nodes that are much less convenient and efficient. Th ...
Calling SetupAttachment/AttachToComponent with 'this' as the parent inside a USceneComponent subtype's C++ ctor for nested component subobjects will result in all instances of the nested default subobject trying to attach to the CDO at registration time.
UE - Gameplay - Nov 16, 2016This occurs because the 'AttachParent' property is a UPROPERTY, and as a result when we create a new instance of a USceneComponent subtype, any USceneComponent subtypes it owns are treated as instan ...
Selection Highlight cannot be disabled for Skeletal Meshes
Tools - Feb 7, 2017Selection highlight cannot be disabled for Skeletal Meshes. They will always have the outline selection and some tinted selection over their faces. Static Meshes do not exhibit this behavior. This ...
Thare are some case in which KeepState doesn't work propely if level sequence have multiple Shot and Transform Tracks
UE - Anim - Sequencer - Feb 16, 2021if fulfilling following conditions, KeepState setting of transform track doesn't work.level sequence have 3 or more shot have camera track and actor track have transform tracktransform track of acto ...
Controller::OnPossessedPawnChanged broadcasts (Pawn->null) but not (null->Pawn) during AGameModeBase::RestartPlayer()
UE - Gameplay - Sep 17, 2025Context AController has a blueprint assignable delegate that fires when the possessed pawn changes. This should fire in both singleplayer and networked games. The bug is reproducible in single play ...
Crash: Direct3DDevice->CreateBuffer failed at D3D11VertexBuffer.cpp with error E_INVALIDARG
UE - Graphics Features - Jul 6, 2017This is a common crash affecting users since at least the 4.14 release. It was previously associated with [Link Removed], however that has been marked as fixed. Source Context 221 void Veri ...