Rotation does not always appear to be replicating when bUseControllerRotationYaw is set to false on the Character's class.
This seems to occur 4/5 times. There are the occasional times where teleporting the Client's Character will replicate the rotation correctly, but this is not a consistent behavior.
Result: The client character is rotated correctly on the server, but not on the owning client.
Expected: The owning client's character would be rotated on the server and the owning client.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-45237 in the post.