Internal texture transparency issues
In Uvirith's Legacy (and other mods using the same models), some of the display cases have white opaque covers instead of semi-transparent, with the following warning:
Warning: unhandled internal texture in meshes/ladye/discase_5.nif
(RM-3017 from redmine: created on 2015-11-14 by Noetic Jun, , closed on 2015-11-14 by nobody, duplicates #2295 (closed))