annoying rammus q bug

i have noticed this bug since the juggernaut update (although i could've been there before) and since it hasn't been fixed to my knowladge i thought i would do what i can to make everyone aware of it. there is a bug involving rammus' q, powerball. specifically, during the last moments before the spell ends, while rammus is still in powerball form and still has the movement speed from the spell, rammus will ignore unit collision and pass straight through units he would otherwise hit with the spell. as far a i know it is repeatable but only occurs in the very last second or so before he transforms which is likely why so far it has gone unnoticed by rito. but it has screwed me out of more than a few kills. i suspect that the timing of the spell and the animations are simply not lined up very precisely and this is causing the bug. i dont have any video of it but if someone more competent than I were to test it they would likely find the same thing i did.

tl:dr at the tail end of his q, rammus often ignores unit collision for a brief period.