When i click on my Hextechcrafting- symbol my client sometimnes simply closes itself for no reason. apparently in the background its still there somehow, because when i open the client another time it says "League of Legends is already running..." but its gone. I dont know why and its not much of a problem but worth to mention i guess
Restarting the client should solve this but if you are continuously crashing when clicking the HexTech button;
Repair the game by clicking the question mark icon to the top right of the patcher. Select "Repair" and let the patcher scan and repair corrupt game files. When the process is completed, you'll see the orange "Launch" button.
Same to me but instead I got an S on raka mid and it didn't give me a chewt. The screen glitches out and I crashed. Only to find out no chest
