Heimer warding game crash bug

Hi so my friend is a Heimerdinger main (literally the only champion he plays) but for the past few days theres been a particular game altering bug that seems to happen without failure. whenever he places a non trinket ward his game crashes.

i cant recreate the bug in custom games and don't have the time to try it in a normal game. and he's usually not crashed for too long, but it has cost him an advantage or enabled the enemy team to take an objective. its an unfortunate situation and i was hoping this isn't just this one dudes problem. is there anything on the radar about a bug like this? any fixes to the problem perhaps?

we need vision riot dont leave me in the dark!