Hazard rearming sometimes seem to bug out and stop working

I'm running an Elemental Expression Invoker using Spearfield with a 55% hazard rearm chance, and I've noticed that on some maps it seems to bug out and never rearm at all for that map. With over 50% chance, it's extrememly obvious when it's not working. Not 100% sure if it's a bug or if there's some interaction that I'm unaware of that prevents it from working sometimes, but it definitely seems like it happens quite frequently

I can confirm seeing the same thing on my Ritualist with 40% rearm chance (10% with gem quality, 30% with rearm II support), on some maps it would activate around that chance, other times it wouldn't proc at all until i go into another map.

Other support gem used :
Rage III
Brutality III
Heavy Swing
Armour Break III