How To Avoid Broken LeaveBuster After Your Game Crashes
If for whatever reason your game crashes and you don't reconnect within 2-3min, just close the entire game and wait for the match to end. 2nd time I'm getting affected by leave buster just because the game crashes. I've left matches before and avoid leave buster, so it should work unless its been patched. Also, If your affected by leave buster and it unjustified, Riot will not remove it.
One last thing, if you join a lobby very late after pressing yes on the vote, DON'T pick a champ and wait for the time to run out. Close your game and login again cause your game is about to crash on you.
If you got anymore tips on how to avoid it leave buster then leave them in comments below.