Unreal Engine Issues

Mutable - morph does not work for a skinned mesh with more than one uv channel

The morph functionality fails to change when the skinned mesh contains more than one UV channel in a Customizable Object. ...

Curve Debugger window is broken when viewing curves in the Anim Sequence editor

The curve debugger is currently broken when viewing curves on anim sequences. It seems that only metadata/skeleton curves are displayed, and those aren't updating correctly or showing their type (m ...

[Interchange] FBX - Front Facing X-Axis and Flipped Bone Orientation During Animation

Actors attached to a skeleton imported through a FBX file with the Front Facing X-Axis option enabled are flipped when the skeleton is animated. ...

Intermittent Content is Missing from Cook errors for objects with Niagara packages

Intermittently when cooking large licensee projects, an error is reported at the end of the cook:LogCook: Error: Content is missing from cook. Source package referenced an object in target package b ...

Smart Link inactive by default when NavLink is a ChildActor

When placing a NavLinkProxy in ChildActor, the link is not enabled by default. In this situation, setting SetSmartLinkEnabled to true does not establish the connection. You must first set it to fal ...

Lightmass CalculatePointShadowing regression in UE5.6

There is a regression or change in the Build Lighting process when using Lightmass in Unreal Engine 5.6:When building lighting with Lightmass calling the CalculatePointShadowing function, the result ...

crash when rename a sequencer asset referenced by another sequence as shot track

If a mesh contains more than 32 material slots, it can cause a hash collision when computing the Raytracing CachedMeshCommandHash

[AI] StateTree Category = Input validation doesn't validate child properties

Normally if you have a property in your state tree instance data of the input property(Category = Input), when you compile the state tree, you will get errors if the property does not have a binding ...

When exporting from a level sequence, the LOD for the bones is based on the camera distance, instead of using LOD0

When exporting a level sequence to an animation sequence, the bones used will be based on the LOD for the current camera location, instead of exporting LOD0. This is very noticable if you pull the ...