[2020] Banned after playing a entire match(not leaving once)

I was playing a unranked game and i was watching a teammate,and he suddenly left the match, and just because i was watching him it told me i left the match and banned me for an hour.
Please answer back,i dont want my account to be banned because ir a bug.
Thanks ubisoft for a great game
It happened in ps4 about 1 hour after it happened