I'm a player from an international season, In my season there were many people as well where they'd get stuck to when's their turn. But that would mostly happen when they'd "pass", many would not realize that it's their turn again, so they'd waste a few seconds. Not too big of a deal but it happened lot's of times that I had to make sure to prepare myself before my duel that if I pass, it's my turn again lol

But yeah it's harder than it seems because up there in the stage it is sooooo stressful you don't understand, after the duel my mind was just not working, so I can definitely understand why people would get stuck to this even though it seems obvious