Mac In-Game Client Always Freezes When Trying To Get Out Of It.

If you press Command-Tab it usually turns black and the only way to get out of it is by holding the mac power button which i think is bad for the computer and then also at the end of the game if you press continue at the end of the game 9/10 times it freezes so i never get to honor anybody or get to see my honors or what grade i got. This bug started like 3 months ago when Riot changed that when you Command-Tab out of the game it still shows the game in the background until you click something else and after that annoying feature was added the glitch slowly just got worse and worse until now pretty much every time i try to command-tab out or continue at the end of the game it freezes.