Mechanics are working as they should.
It's not because something doesn't work in your favour that it is a bug.
Lol. I know that but that case will happen more than once I guess will be pretty often, like undead with poison or whatnot making literally this specialization completely useless in several situation and even working AGAINST you AND you can't even turn it off.
Unlike saying "shit I can't use my fire spell I have to do something else". Here it is just: "Shit they keep healing themselves and I can't do anything about it but killing my character, yeah I have spent retribution to make my character worse..."
You don't think this is a bug? Well I do, meaning even if it is originally as design, they probably should change it, because that spec does not make you stronger but it works against you and you can't work around it.
What if you have a boss you can't skip that you can't kill because always healing himself with your retribution?
In 4 man party you'll probably try to fight with your 3 other characters but if you play alone ?
Even if it the retribution does not always do damages back it should at least not heal them back because you can't turn it off.
