Unreal Engine Issues

Crash when changing details of an animation in an Animation Composite

This is a regression tested in //UE4/Release-4.27 CL#18319896 Fatal error is thrown and the Editor crashes when changing details of an animation in an Animation Composite. ...

Returning the value of a Transform as a String has a missing colon after Scale

This is NOT a regression. Tested In //UE4/Release-4.27 at CL18319896 Printing an actor's transform as a string returns transform and rotation with a colon, but returns scale without. ...

NPC - Texture Sample DI does not work on Niagara Parameter Collections

Texture sample DIs no longer work when used with Niagara Parameter Collections. This seems to affect Volume Texture DIs based on customer reports, but I have not confirmed this.  ...

Instances missing when importing .Udatasmith containing Forest pro entities

Crash When Renaming a Duplicated Collapsed Node Graph With a Period in the Name

A crash is occurring if you collapse a node and name the collapsed graph something that contains a period. The crash occurs if you copy and paste the collapse graph, and then attempt to rename it. I ...

Crash when importing Alembic data with a large number of vertices if Merge Meshes is enabled.

Regression: FAnimInstanceProxy memory leak when BeginDestroy() called on UAnimInstance before USkeletalMeshComponent

In UE 5.5, the fix applied by CL 36529858 in ue5-main updated USkeletalMeshComponent::ClearAnimScriptInstance() to call AnimScriptInstance::UninitializeAnimation() on the animation instance. This, i ...

MoveToActor doesn't update AI's path on goal actor's move

A number of issues with MoveToActor have been observed in 4.7.2, including: 1. Not updating path on goal actor's move 2. hitting obstacles after path updating ...

NavMesh does not build correctly to SkeletalMesh collision

NevMesh cuts out holes for collision incorrectly with Skeletal Meshes. Skeletal Meshes with "Can Ever Affect Navigation" set to true and that have a Physics Asset are capable of causing this. ...

Deleting foliage actor from foliage menu does not remove actors from PIE until editor is restarted

Deleting foliage actor from foliage menu removes actors from level viewport, but does not remove them from PIE until editor is restarted. Regression (no) issue (does) occur in 4.11.2 ...