Unreal Engine Issues

Suspend/resume iOS Metal Crash on low end device with MTLCommandBufferErrorMemoryless error with lots of geometry

The project was built in Unreal 4.27.2 binary from the Epic Games Launcher. At this stage we have only observed the crash on devices with a hardware combination of Apple A9 1.8 GHz and 2GB of Memory ...

Reimporting static mesh doesn't respect changed lightmap settings

Licensee reports change of behaviour between UE4 and UE5 when reimporting a mesh after changing its lightmap build settings. Change of behaviour occurred in 17404767, which was to fix a similar pro ...

Memory leak in Array draghandles in PropertyEditorHelpers.cpp

SetAllBodiesBelowPhysicsDisabled functionality appears to leave bodies behind that raycasts can still interact with.

From UDN We use SetAllBodiesBelowPhysicsDisabled() to disable some bodies of our Vehicle. However by drawing the disabled bodies' particles position, we found those particles stay where they disab ...

Level sequence asset is dirtied when evaluating a spawnable attached to itself.

VSM cached shadows not updated-invalidated when masked material parameters are updated at runtime

Mesh reduction modules selection aren't properly applied on engine restart

Recent changes in the MeshReductionManagerModule::StartupModule() have introduced issues where it won't respect what reduction modules have been set in the config file. This is a big issue for plugi ...

MultiWayBlend anim node doesn't apply additives correctly

It seems that the MultiWayBlend node isn't applying additives correctly.  In the attached project are two anim bps, one which dynamically creates an additive and one which uses an additive sequence. ...

Undo then Redo Creating a Spawnable in Sequencer Creates Extra Actor in Level

There is a bug when performing an undo/redo on pasted or spawned actors in Sequencer.  It appears that the transaction system is re-creating an actor on redo, but Sequencer doesn't see that, so it ...

Skeletal mesh bones cannot be selected in the viewport of the IK Retargeter

Skeletal mesh bones cannot be selected in the viewport of the IK Retargeter. They can still be selected via the bone name hierarchy. Reproduces in the following://UE5/Release-5.1 CL 2390901//UE5/Re ...