New in warmane, a few questiosn about locks

Hello! I was looking for some guides in this subforum to know the current state of locks in wotlk (mainly bugs) but almost all guides are old so I decided to ask you some questions about it.

- I read pets are bug but some of those bugs are fixed. What bugs do pets have now?

- What are the current state of demonology and affliction specs? The servers I usually play demo/affli are bug as hell and you are forced to play as a destro pvp/pve.

- My main interest is to play pvp, is demo spec a good option right now even with the no resilence bug from pets? And how about affli in pvp? I don't care about high ratings and going hardcore in arenas, I enjoy BG more :P

Thank you!