the game client or the game itself are technically both clients, they both interact with the master server. that being said it’s apparently a game launcher bug and not related to the game itself. but in any case lots of linux (if not all) are bieng concerned by this problem along with multiple wind...
this post links to the forum thread, fingers crossed this helps them debug! send your logs that way if you can.
thankful to the rioters who take personal time to fix riot's bugs to help us out!