Don't know if the PC has the same issues but I'll give a quick list off the top of my head... I've experienced all of these issues many many many times... I'll list them starting from most annoying:
-Game crashes!!!!!!
-Cannot open doors/use transitus shrines 1 out of 10 times...
-Random loading screens in the middle of combat for no reason
-With some classes (like NB's) you can attack them and as long as you're not attacking for a few seconds you can easily get back into hide. With other classes (Sorcs) you are stuck and unable to hide for several minutes, even if you're nowhere near the person and haven't been in combat for a while (yes, even if the player you're attacking doesn't have any pets)
-Floor doesn't load and if you accidentally step in an area that's not loaded yet you run in place and are frozen for over a minute unable to do anything
Any word on fixes for these? the constant disconnects and bugs being unable to leave forts is really unacceptable.