Unreal Engine Issues
Unreal Engine Issues
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Deadlock in URigHierarchy
UE - ACT Character - Control RigWe are regularly hitting a deadlock on 5.8.3. We have one background worker evaluating an animation, holding the RigHierarchy's ElementsLock ...
Mass instanced skinned mesh sweep removes instances without freeing their ASTP tracks
UE - MVF Character - AnimationWhen an entity stops being batched into an instanced skinned mesh component, the "Collect unwanted items & remove" sweep removes its instance,...
Mutable Material Switch node not working
UE - Runtime - MutableWhen using the Material Switch node in Mutable (UE5.8), I do not seem to get pins to wire in my Materials to switch between. Other switch node...
Substrate: FPrimitiveViewRelevance::operator|= bitwise-ORs SubstrateUintPerPixel, inflating the per-pixel byte count and asserting under the blendable GBuffer
UE - Rendering - Features - Shading ModelsA crash can occur due to this check in Substrate.cpp when a material with 2 units and a material with 5 (20 bpp) uints are combined triggering...
[SSAM]Textures that are still compiling are all counted as UnknownRef
UE - Engine Scaling - StreamingIn UE5.8, the texture scale fallback is no longer applied when SSAM is enabled. As a result, if a material cannot access its TextureStreamingD...
Deadlock in URigHierarchy
UE - ACT Character - Control RigWe are regularly hitting a deadlock on 5.8.3. We have one background worker evaluating an animation, holding the RigHierarchy's ElementsLock ...
UAbilityTask_SpawnActor::BeginSpawningActor may return true when SpawnedActor contains stale value
UE - Gameplay - Gameplay Ability SystemUAbilityTask_SpawnActor::BeginSpawningActor assumes the incoming AActor*& SpawnedActor parameter is nullptr if no actor was spawned, but it do...
Incorrect geometry for OnMouseMove event on Slider with RightToLeft flow direction
UE - AI Workflows - UI Systems - SlateWhen a slider is in RTL flow direction, and thus its position is changed, the handle is not drawn at the correct position during mouse drag. ...
Light Function and Post Process domain material thumbnails show the default material
UE - Rendering - Architecture - MaterialsSince 5.8, materials whose Material Domain is Light Function or Post Process no longer preview correctly in the editor. They render as the def...
Mass instanced skinned mesh sweep removes instances without freeing their ASTP tracks
UE - MVF Character - AnimationWhen an entity stops being batched into an instanced skinned mesh component, the "Collect unwanted items & remove" sweep removes its instance,...