I am not sure if everyone has found the solution to use hide mode in quest yet. But I have found it, and am going to let you guys know. So we can find those quest hackers etc. =D

So basically these are the steps:

1. When you're in the lobby. Go into hide mode. /hide obviously
2. Make a room for yourself only. Password it.
3. Change it to quest. Any map. And start it
4. When you start it, nothing will happen, and it will say finish. That is fine.
5. Repeat the same process steps 3 & 4, but this time with the other maps.
6. When done, leave the room.
7. Now you can access active quest rooms that are being played, without crashing your client. =D

I hope it has helped those of you who didn't know.

-Clarity / Daniel

=)