I don't know if this has already been mentioned but here is what I noticed when fighting IMIW with VTD, while the armor buff was active and I would inflict a bleed debuff a degen should be applied but here it just says Immune and no degen. I believe it's an issue cause I read IMIW abilities multiple times and found nothing that would prevent the degen to apply.
Also this happened to me in multiple modes of the game arena, quests...
