Yelp also seems to convert quotes (") in manpages to the letter q. For an example, search for man:xorg.conf in the search bar and scroll down to:
Section qSectionNameq which is supposed to read: Section "SectionName" -- manpage rendered wrong https://launchpad.net/bugs/50318 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs