1. Ahn'Kahet has 3/5 working bosses, bonus one and last one are too bugged to be completed.
2. Azjol-Nerub works nice.
3. CoS has bugged trash before 3rd boss (Arthas stucked in place on trash before 3rd boss and nothing goes later, instance bugged).
4. Drak'Tharon works ok.
5. Gundrak works good.
6. Halls of Lightning works good (maybe expect 2nd boss).
7. Halls of Stone has bugged 2nd and 3rd bosses (2nd can be completed but has bugged aoe stun and targeting while 3rd boss bugs out completely after wipe).
8. The Nexus is horrible, Telestra (2nd boss) and Omrok (4th boss) are so bugged.
9. The Oculus is closed and no information about its opening.
10. Utgarde Keep works ok with some several bugs but not that major ones.
11. Utgarde Pinnacle has bugged 2nd and 3rd bosses (3rd one has too fast spawning mobs).
12. The Violet Hold has pretty good working bosses but portals and mobs can randomly bug out making instance impossible to complete (on my 1st run i couldnt get past 11th portal because Azure Stalker mob fall underground and on my today's run after 13th trash pack instance randomly stopped working).
So we have 5 dungeons from all 12 which can be FULLY completed and 6 dungeons which have major bugs making them hardly possible or impossible to fully completed and Utgarde Pinnacle which is between them.
I would suggest to focus more on dungeons rather than on raids as they are required to gear up for those raids.
1. Ahn'Kahet has 3/5 working bosses, bonus one and last one are too bugged to be completed.
8. The Nexus is horrible, Telestra (2nd boss) and Omrok (4th boss) are so bugged.
12. The Violet Hold has pretty good working bosses but portals and mobs can randomly bug out making instance impossible to complete (on my 1st run i couldnt get past 11th portal because Azure Stalker mob fall underground and on my today's run after 13th trash pack instance randomly stopped working).
1. The last boss of Ahn Kahet is doable with a little trick - when he casts Insanity everyone run away from him (to avoid pulling the mobs) and then the tanker starts to kill the mobs alone, then helping the next one, and so on... I did this 3 times.
8. What is bugged in Telestra and Omrok? I did them 4 times and saw nothing wrong (that anticheat though...).
12. In VH the biggest problem for me is Ichoron - when he despawns the globules appear too fast and too close to the boss, making the achievement impossible and the encounter last longer.
PS: I did only normal modes for now.