Unreal Engine Issues
Unreal Engine Issues
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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 - World Creation - Worldbuilding ToolsIn UE5.8, the texture scale fallback is no longer applied when SSAM is enabled. As a result, if a material cannot access its TextureStreamingD...
FDebug::EnsureFailed will only broadcast OnHandleSystemEnsure 4 times.
UE - Core - SystemsA licensee is reporting that OnHandleSystemEnsure will only be broadcasted for the first 4 ensures in the life of the process. This is hardcod...
Preview rendering does not update when slider is moved below 0.0 in timeline on in Niagara Editor.
UE - Rendering - Architecture - NiagaraWorkaround in UE5.3: UNiagaraComponent::TickComponent if (AgeDiff < 0.0f) { SystemInstanceContr...
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...
[Niagara][5.8] Data Channel Read and Write register with an identical type hash when fx.Niagara.DataChannels.Enabled is set from ini, hitting checkf in FNiagaraTypeRegistry::RegisterTypeInternal
UE - Rendering - Architecture - NiagaraAffects: 5.8 (verified on Release-5.8), Windows, EditorSummary Adding fx.Niagara.DataChannels.Enabled=true to an ini file makes the Niagara e...
Scrubbing the timeline in Sequencer can hang the editor when operating on constrained actors with complex control rigs
UE - ACT Character - Anim in EngineThe issue is caused by UAnimDetailsProxyManager::ForceUpdateProxyValue triggering evaluation of constraints that are attached to control rigs....
Chaos Mover crash in standalone editor client
UE - Runtime - CharacterWhen using the Chaos Mover with resimulation enabled, standalone editor processes running as a client will crash around 80% of the time upon s...