"I dont like this game, I quit"
Our midlane basically said this while we're ahead and quit the game. There wasn't any drama, no ks, no feeding, midlane just left in the middle of ranked. This isn't even a low level normal games where players get the feel if they like the game or not, this was ranked. I don't know if our midlaner had someone else playing on their account or not, but leaving a game halfway just because they didn't want to play is unacceptable. Looking at their history, they played again two hours after leaving our game meaning they had no intention of quitting the game, but left because they felt like it.
I think this type of player should be permabanned even if it was a first offense. I can forgive people with internet issue or personal emergency, but not the kind that treat ranked as a joke.