I just managed to replicate, effectively it needs a restart. I'm investiguating

I fixed the dancing issue. As for the teleporting I'm afraid it's lag.

You're welcome Andrew =) Happy gaming ^_

I see a discrepancy between your card (GeForce GTX 1060) and the one used by the engine (Intel(R) HD Graphics 530).

Look at "How to force the more powerful NVidia GPU to turn on" in https://brightrockgames.userecho.com/topics/1096-missing-invisible-or-laggy-ui/

And it should hopefully works = )