Warwick is generally agreed to be one of Riot's best reworks in terms of balance. Define "overturned for a while"? Because he literally went through more than an entire season (from 7.2 to 8.7) without ever being touched, and nobody was vocally complaining about him.
Nobody was vocally complaining because there was a massive reddit circlejerk about Warwick being a perfectly designed and balanced champion despite being 54+% winrate for like a season and a half.