Abilites and auto attacks that follow you after you get out of range.
The projectiles should stop when out of range. If i flash from a ranged auto attack and it still hits me. That should not be a thing.
2 Comments
I disagree. The reason auto attacks and single target spells keep going is that you got in their range is because, game-balance wise, letting you cancel them (as the default) by getting out of range gives too much power to mobile glass cannons, and assassins: "I'm going to dive them, do my damage, and have enough time to get out of their range so that, even if they react to me and auto attack or point and click, their spell will whiff and I'll be off scot-free.
See (as a short list): 
bullets keep going even if you run faster in a strait line though. but it would probably cause a lot more problems then you would think by flat out getting rid of it.