Was in the loading screen and the client completely went through a melt down. Ultimately resulting to a pop up window reading System Error.
The only way to fix the issue was to close out of League entirely and re log.
Has anyone else come across this recently after the patch?
This board is the best place to discuss the client with Rioters and your fellow players, although it won't be our main source for feedback resolution. Look to the other tools, like the Submit Feedback button in the client, for that. As always, please follow the Universal Rules and keep content focused on appropriate topics for this board.