Unreal Engine Issues
Unreal Engine Issues
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. ...
Not all MidPhases are enumerated in TSimCallbackObject::OnMidPhaseModification
UE - Simulation - Core - Dec 2, 2025Newly generated MidPhases are copied into the array accessible in the NarrowPhase after the OnPreSimulate callback is invoked. As a result, it is not possible to modify newly created MidPhases withi ...
Material LocalPosition node does not work correctly with Nanite Skinned meshes
UE - Graphics Features - Dec 1, 2025Nanite Skinned Meshes don't receive the correct Local Position in some shadow passes. This depends on the clipmap level, and is not related to VSM caching. Unreal Engine 5.6 shows the same issue, b ...
Memory leak in Landscape edit mode
UE - Graphics Tools - Terrain - Landscape - Nov 28, 2025PIE also rendering in-active / unfocused editor viewport
UE - Graphics Features - Nov 28, 2025In 5.8, after entering PIE, the editor will start doing two SceneRenders per frame. This dramatically drops performance. Presumably this second render is for the inactive / unfocused editor viewport ...
SaveGeneratedTexture2DAsset can crash when overwriting an existing asset
UE - Texture - Nov 28, 2025SaveGeneratedTexture2DAsset can crash for a variety of reasons when overwriting an existing texture asset. When no existing asset exists, the function simply moves the provided transient Texture ass ...
Translucent deferred decal materials look different when setting specular attribute directly or via constant node
UE - Rendering Architecture - Materials - Nov 28, 2025Translucent deferred decal materials look different when setting their specular material attribute directly on the material node versus setting it via a constant node ...
Morph target normals not correctly applied when imported as LOD 0
UE - Editor - Content Pipeline - FBX - Nov 27, 2025This is a regression since 5.5 with skeletal meshes where morph target normal/tangent deformation only works when a mesh is imported as a LOD of an existing skeletal mesh, but not when imported as L ...