unsolicited draw ends game

I was playing this game on DGT board lichess.org/5X17Z23nh3Hp
and suddenly the game ended after move 22 with neither player requesting a draw.

Last thinking time was 94 seconds from White ... there's a possibility to declare draw instead of claim win if someone disconnects, but is there a chance that this was the case?

In this case it usually says "White/Black left the game".

Ok thanks for reply