Glitch When Playing Against Bots

I've had at least two games ruined now by this odd bug the occurs when playing against a bot. What happens is that the bot suddenly starts playing itself! The last time this happened, the bug appeared after I had adjusted the theme for the chess set I was using. When I came back to the game and made a move, the AI started making moves and countermoves by itself for about five or so plys.  Then it stops.  The odd thing is that even if I take back the moves, the AI insists on keeping the moves it made and just ignores what I want to do.  As can be seen in this screengrab from the ruined game, even the UI is somewhat messed up in that the PGN only shows 12 moves but the board position is in reality about move 15 or so (the last listed move is the last move the bot made before the bug occurred). What is more, the UI is highlighting move 7 even though this position is way past that move.

I just went back and tried to resume the game again and this time is jumped to this position, which appears to be one move further along (and again the UI is highlighting the wrong move):

Again, I haven't made any of these moves! 

I don't know quite what is going on here, but this glitch has ruined two games for me.

Is this on the website? 

Yes. Chess.com via my Chrome browser. I haven't had this problem with the app.

Just one more thing. I closed my web browser window and reloaded Chess.com from scratch. When I go to resume my game, it does remember that last position before everything glitched out:

But as soon as I make a move, it jumps to playing itself again. I moved 13.Rc1 but this is what the screen jumps to after I make that move:

It seems like the PGN record in the cache gets corrupted.  Or something.

Seems like they still have not fixed it.