Pathing Bug (Tahm Kench)

Not sure if it's other champions as well, but today I have experienced numerous occasions where clicking at the edge of my screen makes me actually walk the opposite way. As you can understand, its extremely frustrating to have this happen where there is a teamfight and I randomly walk back into their team when I should be running the opposite direction. I'm not sure why in the world this is happening but PLEASE dear god get it tf out of my games. I'm just trying to play the game.... It has only happened to me while playing Tahm Kench, and I have only noticed it today.