Mini Map Spellcasting

Could we get a toggle for mini map spellcasting? There is one to stop mini map movement but none to stop spellcasting. It happens to me pretty frequently when using skillshots that when i position my cursor in a certain direction to fire a skillshot it ends up shooting backwards or in any other direction because my mouse goes slightly into the mini map. Usually happens at moments of haste when I need to make sporadic movements in teamfights or while kiting.

At the moment i main and there's no worse feeling than when you fly your package in the wrong direction because of a fixable mistake and it becomes completley useless