I was on move 4 here, considering my options. This is not a line familiar to me, so I was taking my time to consider what to do next. Granted, it was not that long—you can see I had spent less than 2 minutes of my time, and already played 3 moves.
During this game I was also working online and managing a Zoom meeting (I know, I know... lol). So I clicked into my Zoom app for literally like 30 seconds to type something to someone. When I came back, it said I left the game and had forfeited me. I don't even think enough time had passed for my opponent to get the "your opponent has left the game, claim victory?" prompt.
Usually running lichess on my desktop (Mac, Chrome) is a surefire way to AVOID getting auto-forffed for "leaving the game," which I understand happens on my mobile when I got to another app. I have played 2-hour games this way, working on other documents in other apps on my desktop, with no issue in the past.
Any insight into why this happened? Thanks!