Everything was flowing perfectly in Lordaeron until one day I could backstab / Ambush / Garrote / Gouge people regardless of facing requirements, Gothikk the harvester was bugged and the four horsemen were bugged so much that you couldn't actually kill them cause meteor one-shots everyone even if they're stack.
Heigen Dance is bugged as well on Teleport phase, He does next splash within 1 second and raid cant survive without all on platform and 7 healers minimum.
Gothik - Did not check yet again.
Horsemen - Meteor fixed
It's not a matter of one of the dev's randomly wanting to **** up something they fixed. Sometimes in code, when you fix one thing, it can accidentally break another. Not everything in life works flawlessly and effortlessly. Why do you think sometimes a big update on a apple or android device breaks something that was working before? Sometimes it happens and its just **** hitting the fan. They do what they can to fix things, but people have to expect a thing or two to go wrong at some point, but as humans, we want perfection.