Unreal Engine Issues

Callback set with AddNativeStateEntryBinding() stops working after ABP compile during PIE

After compiling the Animation Blueprint (ABP) during Play In Editor (PIE), the callback registered with UAnimInstance::AddNativeStateEntryBinding() in NativeInitializeAnimation() stops functioning a ...

Level Instances appear at the origin on Linux cooks

Level Instances are spawned in the origin (0,0,0) after making a packaged build in Linux ...

Actors with Absolute Location/Rotation attached to editor only actors do not position correctly in World Partition

When level instance is in standalone mode, the actor with IsMainWorldOnly enabled is loaded into persistent level.

The IsMainWorldOnly setting for Actor in LevelInstance is not reflected when LevelInstance is in Standalone mode. The setting is respected when LevelInstance is in Embedded mode. The Actor is not l ...

Anim Blueprint preview plays incorrect anim sequence after swapping sequence players

It seems that the debug skeletal mesh in the anim blueprint preview can end up playing the incorrect anim sequences.  This happens when a sequence player, with the anim sequence specified via proper ...

Layered Control Rigs + Skeletal Mesh with Animation Blueprint in the Sequencer

When a layered control rig track is added to the sequencer the character’s legs will collapse into the body of the character. Switching the layer to additive will do nothing. Trying to force the ani ...

Cook errors from Landmass plugin in 5.4

When actors are placed in a folder their attachment dependencies are no longer loaded when the root actor loads

Level Sequences can't reference actors that reside in Level Instances different from the ones they are executed from.

Level Sequences can reference many actors, but the references are not solved if the actor is not in the same Level Instance as the one the Level Sequence is being played from, or the root level from ...

Ambient Occlusion darkens the entire scene in VR Preview