As was said in lichess.org/forum/lichess-feedback/an-redundant-chessboard-covers-on-the-recordings-of-the-game , I'd been meeting such a bug since a month ago. When I've enabled 'computer analysis' in the analytic board, sometimes a redundant chessboard appears, and covers over my game recordings.
It's really annoying, and my last asking has got no answer.
It's really annoying, and my last asking has got no answer.