it's a bug
Do you know why they turned off the sound of the chess pieces moving?
The CDN the site uses for static resources, such as sounds and images, is experiencing issues.
So it's a bug that's being looked into 👍
I usually play 10 min matches and I would be multi-tasking by browsing the web if my opponent is taking some time with his moves. Is it a bug or a feature? Is chess.com forcing people to look at the screen by removing the sound?