Physics object bounces around erratically when interacting with moving/rotating object. In the test project you will see multiple instances; some will not behavior erratically but many will. The licensee says that sub-stepping needs to be enable to see this behavior but during testing, it seems to happen regardless if Sub-stepping is enabled/disabled.
Results: As the square rotates, the physics object inside will bounce around and behave erratically
Expected: For a physics object of this size to behave as closely to real world as possible and slide around the inside of the square as it rotates
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-52573 in the post.