Problem with bleed and Bone Cage

I have a Mercanary (sry for typos it's late/early for me) that I built when I dropped a Sanguine Deviner, I currently have 145% chance to bleed and have noticed that every so often when I hit a no-bleed immune enemy the bleed status doesn't register til I hit it 1 or 2 more times I apply pin and hits with Bone Cage normally but the bleed doesn't also hit right now I can just hit until it affects but thought you should know a merc with over 100% bleed with physical spells is a unique set of conditions so and yes the chance to bleed is on hit not on hit with attacks and the passives that have % increase to ailments works perfectly with bleed thus the 145 to bleed. so far i'd say it's 1 out of every 20 or so monsters