Have you tried clearing your cache? Probably but thought I would ask.
bizarre bug

Making more excuses for losing, James? Whatever happen to that blog post about losing gracefully?!
Ironically, I got the message that my opponent might have violated ... after the abort. lol

Have you tried clearing your cache? Probably but thought I would ask.
Sure, I cleared it in 2015.

There were eight rows of squares north of White's pieces. I had to scroll down in order to find my pieces. This happened twice--closing the browser and then reopening and returning to chess.com did not fix it on the first try. I repeated the close/open routine and things were back to normal.
This bug came between wins, David.

It happened again, and then resulted in this nonsense:
Please do not intentionally abort or disconnect from games, or make your opponents wait unnecessarily. Your account may be restricted if you do not follow our Fair Play Policy. Thank you for keeping Chess.com a fun and fair place to enjoy chess!
Not only is the chess board weird, but I cannot move my pieces.