Encountering same problem. Button is greyed out and showing as "Not Available". Beam out was possible through Transport Officer on Qo'Nos, so ability to there, but access is not.
On bright side, great opportunity to get stuck somewhere and shout KHAAAAAAN!!!!!:)
I've found that a KDF officer can warp out of system by flying to the edge of the system map then choosing warp when the prompt comes up. The KDF UI seems to be in a more incomplete state than the Federation one. Things like highlighting glow for auto fire arming doesn't look any different from the previous 2 patches.
If something is not broken, don't fix it, if it is broken, don't leave it broken.
I've had the same problem. Returned to a KDF character that I created a long time ago but never played. First I had to have someone free them from what is probably now a redundant tutorial area. Then when I got to the Space Chase episode I couldn't warp from Qo'nos to sector space except by going to the edge of the map, unsure of it's still the case now that I've reached sector space.
EDIT: I cannot use the Depart System button at all.
Comments
On bright side, great opportunity to get stuck somewhere and shout KHAAAAAAN!!!!!:)
EDIT: I cannot use the Depart System button at all.
http://sto-forum.perfectworld.com/showthread.php?p=14332861#post14332861