Zombie processes are left after game.

Macbook pro, mid 2012. Recently re-installed client, and every time I play a game a zombie process gets left behind.

I can see it on my Force Quit menu, but cannot force quit them. Can't find it on Activity monitor nor the top command, it's a dead process. I've already closed the client.

https://puu.sh/rDm1x/73f2adc941.png (I played three games.)

Anyone having the same issue?