Last hitting minions while your teammate is dead or walking to his lane makes them tilt
Title speaks for itself. This happens allot in lower ranks because they dont understand that their throwing away precious gold and xp for no reason. Im plat and this actually still happens, but much rarer. This is sad and frustrating at times, when they ping you like crazy and says gtfo dont take my farm etc. It ruins the game mode and you definitely wont gank that lane again. Or the jungler talks back and steal all his farm which leads to a toxic conversation, trolling and GG.
Suggestion: Improve the game tutorial and explain simple stuff new players needs to know.
Make a forced popup video on log inn with quiz afterwards XD.
There is definitely more things like this. Share your thoughts.