ARAM Dr Mundo bug - Riot please look into

i played a game of aram yesterday and a mundo was on the opposing team and his q's were invisible. couldnt see a single one at all on my screen but he was definitely throwing them and hitting me. his animation to throw was working but the cleaver itself was invisible. he was using a skin but i dont recall which one, possibly corporate or mundo mundo.

one of my friends was having the same problem, but my other friend was able to see them just fine. I dont know if this is a recurring problem but I've attached the link below for the match history (hopefully it works) but otherwise its the last game i've played.

I will note that when i asked in all chat why i couldnt see mundos q's he replied something about hacks, but I will assume it was said jokingly; nonetheless please look into if youre not already thank you

http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/1800679781/51263952?tab=overview