Faridun Heavy Infantry Immune to Bleed?

Playing rake build and these guys (Faridun Heavy Infantry) take like 10x longer to kill than map bosses even at normal rarity because they seem immune to bleed. Is this by design or a bug? Thanks!

Seeing the same issue.. Both the Faridun Infantry and Faridun Heavy Infantry seemn to be incredibly resistant to bleed. Even after clearing the entire Dreadnought Vangard map with 100% change to bleed Rake, I've only managed to bleed one of them... and even when heavy stunned, they don't become vulnerable. I don't think any mob should be that resistant to bleed, but even if this is intended, there should be an icon or something indicating bleed resistance.

Bug Report ID: #1392184834