Range values and indicators are misrepresenting the overlap.
Most abilities in the game have very bad range indicators. Abilities seemingly explode when next to another champion even if the game appeared to let the champion go. Also, the champion sizes are incorrectly reflected by the circles that SOMETIMES exist around the champion to give a clue about the APPROXIMATE size of the champion. This is messy code. Please clean because some people are playing champions that exploit this known bug by throwing out abilities that they would have had to carefully shoot instead. For instace, Morganna Q can miss someone and then pull them back to root them where they were before the skillshot was there. This indicates that the range of the explosion is much more massive than the width of the skillshot. This is misleading. Also, abilities that cover a wide area often will misrepresent the active size of the zone. This is most likely because the interaction between champion sizes and the area of effect skill are not syncing clearly leading to misrepresentation of what the actual area of effect is.