Unreal Engine Issues

MovieSceneSequenceExtensions::AddSpawnableFromInstance no longer adds a spawnable correctly

A welded hierarchy blocks updates to collision settings on all but the root primitive. Calling SetCollisionResponseToChannel on the children won't work.

A welded hierarchy blocks updates to collision settings on all but the root primitive. Calling SetCollisionResponseToChannel on the children won't work. The licensee noticed that IPhysicsProxyBase* ...

GatherDebugData not setup for new animation nodes.

There are some gather debug calls not setup for new anim nodes, interrupting the gathering of the rest of the chain for the animation debug screens. OffsetRootBone OverrideRootMotion Steering DeadB ...

Changing the state of a PrimitiveComponent->BodyInstance while SetSimulatePhysics(false) updates the game thread but does not update the physics behavior

Changing the state of a PrimitiveComponent->BodyInstance while SetSimulatePhysics(false) updates the game thread but does not update the physics behavior. In the repro project provided (see addl in ...

Small UInstancedStaticMeshComponent::UpdateInstanceTransformById bug

The call to UpdateInstanceTransform within UInstancedStaticMeshComponent::UpdateInstanceTransformById(..) sends bTeleport in place of bMarkRenderStateDirty that was added as part of Unreal Engine 5. ...

Base materials in exported Datasmith files imported into Unreal Engine are missing material function.

Datasmith imports in UE do not render materials due to missing material function. Works in UE 5.6 main but not UE 5.5 or 5.4 ...

In UE5.5(final), when adding plugin from an older version of Unreal to a BP project, we are informed that the Engine Modules are out of date, and cannot be compiled while the engine is running. Please build through your IDE.

In UE5.5(final), when adding plugin from an older version of Unreal to a BP project, we are informed that the "Engine Modules are out of date, and cannot be compiled while the engine is running. Ple ...

Translucent light grid injection behavior

Light injection into the Translucent Light Grid voxels does not use the correct location for clipping or attenuation. Both of these points are outside the voxel that is being updated. Light attenua ...

Crash in FNiagaraGPUInstanceCountManager::AddDrawIndirect when Android Vulkan Mobile preview platform is enabled

In the Android Vulkan Mobile preview mode, when multiple GPU niagara systems are visible and the user moves the camera around the level it can cause a crash, potentially caused by a race condition o ...

'prefix parameter names' checkbox in a material function's settings does nothing.

Prefix Parameter Names checkbox does not work as expected, and the Group names are unmodified. The value "UMaterialFunction::bPrefixParameterNames" does not appear to be used anywhere in the Engine ...