Dont....see this so much as an issue tbh. Im assuming arrows show the little 'move up and then down' trajectory (dont know the word for it) because thats how the arrow would fly at long range. Even though at such a short range it wouldnt even get a chance to rise and then fall due to gravity but just fly straight in the target. Im guessing arrows and arrow-like attacks to just use that trajectory while aiming.

I dont see it as a problem high on the priority list though.