Bug when changing the clients resolution

Whenever I change the clients resolution to a bigger size, it bugs out when I finish a game, making me unable to honor and check out the statistics after the game. I know I can just check out the match history but it is still kind of annoying since i have to close league from task manager then boot it up again. When a game ends, the client is just a tiny black rectangle and I can only move it around.

You can see what it looks like after a game Here

Thanks in advance

Here is a drawing of my favorite champion Amumu as a thanks for taking your time to look into it. I struggled to make it look as best as possible. It represents my feelings towards this bug