It’s a good thing that the offside rule has advanced in recent years so a player needs to be interfering with play to provoke the flag, but it does lead to the occasional confusing moment.
Arsenal thought they had taken the lead against Leicester today, and they look a bit bemused that the goal wasn’t allowed to stand:
— D9INE (@D9INE_PLATINUM) October 25, 2020
Pictures from The Premier League
Aubameyang doesn’t touch the ball on it’s way in, so it looks like the offside was given against Granit Xhaka who was in front of the keeper.
In fairness he is in an offside position, and he does stop the keeper from moving forwards or diving properly so it’s probably the right call.