Unreal Engine Issues
Unreal Engine Issues
VirtualTextureStreamingPriority cannot be set per TextureLODGroup
UE - Rendering Architecture - Dec 11, 2025It is currently not possible to set a VirtualTextureStreamingPriority via the TextureLodGroups that are defined in a device profile. ...
[ALT] - UE56 Editor launched with -AsyncLoadingThread will trigger MTAccess
UE - DEET - EditorLoader - Dec 10, 2025When launching the editor with the -AsyncLoadingThread command, the engine uses an asynchronous thread to load and instantiate UObjects. At this point, if the instantiated UObject contains an FData ...
LI Property Override: LI internal references are broken when saving the overrides.
UE - World Creation - Worldbuilding Tools - Level Instances - Dec 4, 2025When Saving the level, ULevelInstancePropertyOverrideAsset::SerializeActorPropertyOverrides will run UStruct::SerializeTaggedProperties to "diff-serialize" each object against its archetype (the LI ...
Issue with Niagara emitter inheritance
UE - Niagara - Dec 4, 2025Modules in the particle spawn stage get unlocked and lose inheritance after changing the inherited emitter's interpolated spawn mode to "No Interpolation" then resetting. ...
UInstancedStaticMeshComponent::AddInstances does not appear to be adding per-instance previous transforms when enabled
UE - Graphics Features - Dec 3, 2025Instanced static mesh component does not add instances transforms to PerInstancePrevTransform array when using UInstancedStaticMeshComponent::AddInstances. Additionally Updating the transforms of th ...
PlayerCollision visualization incorrect on LandscapeSplineMesh when Nanite is enabled
UE - Graphics Features - Nanite - Dec 3, 2025From licensee: I’ve found an issue with the visualization of PlayerCollisions when using LandscapeSplineMesh with a mesh that has Nanite enabled. The Chaos collisions shown in the Chaos Visual Debu ...
Pass names appear as "RDGEvent" in Unreal Insights when r.rhisetgpucaptureoptions=1
UE - Rendering Architecture - RHI - Dec 2, 2025When capturing a trace in Unreal Insights, all r.rhisetgpucaptureoptions=1 (r.RDG.Events=3) all RDG pass events appear simply as RDGEvent, without the actual name due to the logic for RDG_EVENT_SCOP ...
FStateTreeRunParallelStateTreeTask and TStateTreePropertyRef
UE - AI - StateTree - Dec 2, 2025When using a state tree that has a StateTreePropertyRef as a parameter in parallel any references will fail to resolve using the GetPropertyRef node. ...
Standalone Level Instance with WorldPartition world don't load in editor
UE - World Creation - Worldbuilding Tools - Level Instances - Dec 2, 2025A WorldPartition map used as a level instance that's set to standalone mode doesn't load its actors in the editor. ...
ActorColoration mode is broken in a package.
UE - Graphics Features - Dec 2, 2025The coloration mode should just work. You may be able to temporarily workaround the issue by disabling PostProcess. ...