Specifically, I'm wondering about the debuffs on the Protectors fight. It seemed like my healers couldn't see Garrote and they couldn't see how many stacks of Bane were on someone. I'm tanking, and I use the default raid frames, which show me everything bright and clear. It's very weird to have my healers ask "Why is the mage taking so much damage?" when it's perfectly clear to me that he has Garrote.
Is that a Healbot thing?