Unreal Engine Issues

Custom thumbnails don't get updated until the asset is saved

This is a regression, here's the repro in FN/Main (48954958) : [Link Removed] And now in UE5.7 (48496583) : [Link Removed] ...

PlayerCollision visualization incorrect on LandscapeSplineMesh when Nanite is enabled

From 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

When 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

When using a state tree that has a StateTreePropertyRef as a parameter in parallel any references will fail to resolve using the GetPropertyRef node. ...

Not all MidPhases are enumerated in TSimCallbackObject::OnMidPhaseModification

Newly 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 ...

Memory leak in Landscape edit mode

PIE also rendering in-active / unfocused editor viewport

In 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

SaveGeneratedTexture2DAsset 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

Translucent deferred decal materials look different when setting their specular material attribute directly on the material node versus setting it via a constant node ...

FBX Import - Morph target normals not correctly applied when imported as LOD 0

This 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 ...