This, in my opinion is the biggest design flaw of the game.

This impact the most on Olaf

Whenever olaf throws the axe, he have to aim it far to throw it further away. BUT,whenever he touches the UI on the screen, it treats your mouse position at 0,0(Top lane hand corner), and throws it there.

Is it how the engine is build, that makes this impossible to be fixed?

Why would aiming bottom left of the screen, but touching the UI, makes the mouse reset back to 0,0 position?

If possible, fixing this will definitely help alot in the gameplay

Also affects Ashe/Morgana/kennen.. etc etc etc..
Whenever you are in a quick team fight or whatever, and you wanan use your skill quickly, there's definitely a time when you will touch the UI.
This is inevitable, and it should be fixed.

Another solution that we keep asking riot for is a slightly zoomed out camera so this would never be an issue. It's quite literally the easiest fix in the world to do (it used to be editable by users via an .ini!), but alas...

Isn't anybody affected by this? I really think this should be fixed...
Not only me, I see many players doing these kinda shot..

Whenever I see a skill shot going to top left[totally wrong direction]..
I know they met this same problem.. Isn't this a big problem enough?

Seriously please relook at this problem

I second this. So very annoying. Just have it use the last known non-UI position. Another variable at most.