It happens fairly often to many people who lose their connections for various reasons. There is a good help explanation of why connection maintenance for chess games offers different challenges than movie streaming sites, etc.
I see that you have won 59 games that way and lost only 28 times.
You have played 1055 games.
I just had a game abandon on me, saying I'd abandoned despite the fact I'd just taken my turn and didn't disconnect?
This happened to anyone before? I definitely was not winning but that seems really off.