The ceiling texture directly above the left Romulan shuttlecraft inside the Tier 1 warehouse instance seems to not have processed, as its black - in DX9 and DX11. Although it actually seems like there is no actual ceiling at all.

Here it is: http://i.imgur.com/cYy4D.jpg

Here it isn't (the correctly processed texture above the right shuttlecraft): http://i.imgur.com/669uZ.png

*SPOILERS*

If its because Madran uses that way to escape via shuttle, then a) I didn't see him escape with the shuttle, I presume it lifts off and the doors open? and b) well... its not showing the outside world if thats the case