ACharacter defaults bUseControllerRotationYaw to true, which makes the Controller's rotation overwrite the actor's rotation every tick -- stomping our manual AddActorLocalRotation calls almost immediately (visible as a barely-perceptible tick instead of a turn). Plain Pawn (the ship) doesn't have this default, which is why the same rotation logic worked fine there. Disabled it on both the class default and the placed instance.
41 KiB (Stored with Git LFS)
41 KiB (Stored with Git LFS)