Champion makes uncontrollable beeline to enemy nexus

After the latest update, I started getting this problem every other time I loaded in. As soon as I would make my first click on the map, the champion would automatically set a route to the enemy nexus and I would be unable to control it. The only way for me to prevent giving up first blood is to do cntrl+alt+del to crash the game and reconnect. However! I'm slow to load in, and often by the time I load in, I have been disconnected due to inactivity and have to load in a second time. I've had games in the last few days where I didn't get into the game error-free for 15-20 minutes. Which is why I haven't done anything other than bot games...

Not sure if this is connected, but I also get issues sometimes where I load in and my right click functions as left click and my left click doesn't work.