[CLIENT] Mac client 100% CPU utilization after game ends

In the body of the post, include a more in-depth description of the bug you are encountering. After the game has ended, there often is 2 instances of "LeagueClientUX Helper" that cumulatively eat 100% of CPU time.

Follow up the description of the bug with numbered step-by-step instructions on how to reproduce the issue. Nothing special is needed, just play a few games on the mac client and it happens. It's very repeatable and happens on both my desktop and laptop.

Include how frequently you can get the issue to occur and any video or screenshots of the bug that might help clarify it. It just takes a few games and does not matter what mode, feature, or map.