Game 11446180 Frankfurt
First, I was surprised to get a Possession game with Lord Rat...I had thought Possession was completely out. (I also thought that I had "unfriended" Possession even before that card's ban. So its appearance was surprising.
Second, I did get a Possession and played it. Each time I did, the entire game log disappeared, with the game log now showing only the most recent turn. This sounds like a bug, albeit not--strictly speaking--a log bug, and not an actual game bug.