Title: Patch v9.12 - Fog of War Bug
Match Details: https://matchhistory.euw.leagueoflegends.com/en/#match-details/EUW1/4069628949/201298760?tab=overview
Type of Bug: In-game
Parts of the map, which are out of vision, are incorrectly lit up as if they were in vision.
Vision isn't actually provided.
It just happened to me so haven't had a chance to replicate.
Tried to review the bug in spectator mode but the issue didn't occur in the same way it had occurred in the game.
In other words, the game and the replay had different parts of the map incorrectly lit up.
Screenshot of bug in match replay: https://gyazo.com/2aabe6d64510188b7b036e7e1694bde8