Bugzilla seems to be adding a bunch of whitespace when converting "issue #nnn" patterns to IssueTracker links. See [1] for example. Quick tests: issue #131345 (bug #279601) issue #131345 then some normal text [1] https://bugzilla.redhat.com/show_bug.cgi?id=426131#c17
Yeah, there it goes. Both tests had just one space after the IssueTracker link.