Hey hey!
Been loving the new implementation so far, this is the first thing I have bumped into. Sorry if it has been posted but I can find anything.
Was playing against Lord Rattington, I possessed him, I had his next turn, he had his turn after, then when it was my turn again it got stuck 'waiting for 'Lord Rattington'.
I have attached a JPG of how the screen ended up in case it helps.
This JUST happened to me too.
I just logged in again for the first time since the possession freeze and I was logged into the same game and it was my turn and working again! Epic! So I continued playing and when I possessed Lord Rattington again the same thing happened. So I possess him, he then has his turn and my next turn gets stuck waiting for the Lord. I refreshed the page, logged in again and was returned to the game with it working again.
I also had the same bug.