[Gameplay] Xin's 3rd Q gives infinite cdr when proc'd on a Inhibitor

So the basically when Xin proc's Q, he applies extra on hit damage and 1 sec cdr for the next 3 attacks; this applies on champs, minions, towers etc...

When attacking an inhibitor the ability should be applicable too, but the bug is essentially not being able to to progress in the 3 hit chain when attacking an inhibitor. This leads to him not applying the extra damage however maintains the 1 sec cd on-hit within the duration of the ability. This can potentially be exploited if used consistently.

I was able to experience this bug in a ranked game when I noticed I was able to reduce ~10 secs off my abilities. I don't know if this works with devourer to further increase the magnitude but I assume it would.

EDIT: I just checked the wiki and it says it shouldn't proc on inhibitors, however the cdr is still being applied.