It's a -blam!- joke at this point and it doesnt help that people wont leave broken instances, resulting in that you'll get backfilled into broken instances every time. It's completely unplayable. And it's not just one bug, it'll break at any point in the activity - from not spawning the last boss to being stuck on 2/3 alignments to nothing spawning at all. I don't know what kind of test-enviroment they're running but I have to assume it's different from the live verion because you only have to run it 1-3 times to come across these things.