Unreal Engine Issues

Nativized UMG widgets with animation tracks can sometimes assert with async loading enabled.

The incorrect use of NewObject() to instance nested class-owned subobjects will force StaticAllocateObject() to reconstruct the instance that was already constructed by the outer class ctor in nativ ...

Creating BlueprintActor from EmptyActor produces an Actor with multiple DefaultSceneRoots

This does not happen with UE4.22. Maybe related to CL#7462096 and CL#7476283. These are fixes for [Link Removed]. ...

Default pose is displayed in the first frame when playing with Sequencer

The problem is that the camera is evaluated when the sequencer is played, but the animation does not seem to play properly. It seems that the licensee found this problem when implementing it in C++, ...

SceneCapture2D cause crash on Mobile Preview

'Particle Position', 'Particle Time' and 'Particle Random' material nodes not supported on mobile

Exporting a spawnable through Python doesn't work

Particle System Components don't inherit owner's time dilation

This is a regression introduced by the particle system manager. It does not account for the owning actor's time dilation when ticking the particle system components.  ...

Custom Profiles Don't Update Maps To Cook When One Is Deleted

If you delete a map while it is marked to be cooked in a custom profile, then run the custom profile the map won't be deleted from the profile .ulps. I wasn't able to launch using the new custom pr ...

Native struct types that declare one or more non-UPROPERTY fields are not initialized with the default value from a modified Blueprint CDO.

Dynamically-spawned instances of a Blueprint class go through an optimized property initialization pass (see UBlueprintGeneratedClass::BuildCustomPropertyListForPostConstruction() and InitProperties ...

Using Collision in Niagara without an Update Age module will prevent any particles from spawning

Using Collision without Update Age will prevent any particles from spawning. In Collision Query and Response DataInstance.Alive has a default value of false. If no other module sets DataInstance.Ali ...