Instant Lost Game - Said I Left, When I Hadn't

Hi, hope you are well.
With the below game, it just instantaneously lost the game for me, saying I left, when I hadn't. I never went anywhere, or even off the tab.
Even if I had, I thought players get absolutely ages to come back if they've left. The amount of time I've had to sit there for nearly a minute waiting for it to be able to move on from that game.
Anyway, this is the game:

Thanks,
Richard

Does seem weird that you got forfeited after only ~3 seconds thinking on move 10 (according to the move times)

I'm sure the wonderful devs will take a look

The same thing happened in this game I played. Didn't leave, not even to another tab.
I had another tab opened in the background with a random video. But again, I didn't even switch tabs once.

you probably somehow glitched out of the tab and lagged.