Unreal Engine Issues

Blend profiles/masks don't work with compatible skeletons

From a user:  We are having some issues with blend masks and compatible skeletons. We have skeleton A as the base and skeleton B as a compatible skeleton. They both share a similar hierarchy (altho ...

Add World Rotation applied to a Static Mesh simulating physics behaves erratically 

This is a regression. Tested in //UE4/Release-4.27 CL18319896 Add World Rotation applied to a Static Mesh simulating physics behaves erratically. ...

Widget Blueprints Fail to Compile When Copying Collapsed Graphs into Functions

Collapsed blueprint nodes that are copied and pasted into a function graph of a Widget will cause a fatal error when the blueprint compiles, as seen in the callstack, and will provide the message: " ...

Foliage instance moves in editor causes PerInstanceRandom corruption

Can't record float properties

Allowed Material Slots in the Sample Static Mesh module is not working properly.

It is behaving correctly in 4.27.2. ...

Crash when cooking landscape collision in world partitioned level

This is caused by the loss of data in the ULScapeHeightfieldCollisionComponent::CollisionHeightData. The CollisionHeightData is not marked as BULKDATA_PayloadInSeperateFile and is processed with a k ...

Hierarchical LOD meshes are not frustum/occlusion culled

Hierarchical LOD meshes are not frustum/occlusion culled ...

The Build Nanite property is disabled after reimporting a mesh that has Build Nanite enabled

Regression no, the issue was reproduced in Windows //UE5/Release-5.0 CL 20280985 repro rate 3/3 After the user tries reimport mesh with nanite enabled from mesh editor the mesh was reimported with ...

Moving foliage instances on static mesh beyond the IFA grid boundary does not incorporate it into the correct IFA

WorldPartitionFoliageBuilder commandlet can incorporate foliage instances into the correct IFA. But it removes the connection information between base meshes and the foliage instances. ...