There are two strange things about how special properties currently appear in the Special:Properties page, as you can see here:
http://discoursedb.org/wiki/Special:Properties
First, the special properties all show up at the beginning of the list, instead of mixed in with the rest; and second, some of them show up as having type "Special:Types/".
Version: unspecified
Severity: normal
URL: http://semantic-mediawiki.org/wiki/Special:Properties