Maybe see if the devs could answer your question. They've helped me out with a ton of stuff like this and it couldn't hurt to try.
Game resigned without doing anything
I was playing a rapid chess game in a slightly losing position, when it suddenly said "game abandoned" and gave my opponent the win. It was his turn so it couldn't have been because of time and my internet connection was fine the entire time.
Any Ideas why this happened? It has happened to me twice before and it's getting kinda annoying
Without a link to the specific game, likely it was a disconnect from the live server. Disconnects can be caused by things between you and the server as well
https://support.chess.com/article/213-how-do-i-fix-my-disconnect-lag-issues
I was playing a rapid chess game in a slightly losing position, when it suddenly said "game abandoned" and gave my opponent the win. It was his turn so it couldn't have been because of time and my internet connection was fine the entire time.
Any Ideas why this happened? It has happened to me twice before and it's getting kinda annoying