Unreal Engine Issues

Keying rotation with quaternion interpolation can give unexpected results

Adding keys when quaternion interpolation is enabled can lead to unexpected results.  ...

ChaosDestructionDemo packages cannot be created in 4.25.1

Memory leak in Test build when moving ISM with UpdateInstanceTransform

This leak occurs in Test builds, but not in Development builds. Updating InstancedStaticMesh with UpdateInstancedTransform every frame causes a memory leak. This screenshot was taken using Mempr ...

Ensure when restoring pre-animated state on Skeletal Mesh with Linked Anim Graph

Download and launch attached projectPIEPress the "E" key to play the sequenceWait until sequence finishes RESULT Ensure in FAnimInstanceProxy::GetSkeleton as a result of restore state calling Unbind ...

Replication issue with actors not being attached to sockets

If the client received AttachSocketName before AttachParent, USceneComponent::AttachToComponent will be called while AttachParent may be null, resulting in the received socket name being lost. When ...

Duplicating event section will break binding after editor re-open

Duplicating an event trigger or repeater section will break the binding when restarting the editor. ...

Duplicating emitter asset leads to cross communication between modules

Copying an emitter asset through the content browser will lead to cross communication when the two are used in the same system  ...

Blueprint Data Loss with Certain Variable Names

Certain characters within blueprint variables names will cause data loss when duplicating an actor instance. For example if a variable name contains '(', '{', or '[' it doesn't retain the variable's ...

Masked Material is not displayed in LOD Coloration when turn off D Buffer Decal

This problem occurs not only in LOD Coloration, but also in other debug views such as Required Texture Resolution. ...

Can't update position with SetPositionInViewport when enable global invalidation

When GlobalInvalidation is enabled, do not update to the position set by SetPositionInViewport. It works fine when GlobalInvalidation is disabled. ...