Not sure if i do wrong, or if it is bugged.
When i start a new prefab, i can place 1 block, then the blocks start to vibrate and the prefab is gone (or i am..).
I can press "teleport to" then i can see the prefab in front of me again, but now no move-command work. I can look around with the mouse and arrow-key but not use w, a, s, d, space or c.
I have to close and restart the server to be able to put down 1 more block, then it is the same again.
And when i go from prefab window to worldbuilder, i have to wait minutes before it answer.