I just got an email from LQT titled "MediaWiki discussion - Reply: Reference tooltips" that contained a link to the referenced reply. The link was http://www.mediawiki.org/w/index.php?title=Talk:MediaWiki_1.19&offset=20120207055204&lqt_mustshow=11807#Reference_tooltips_11807 (which didn't work) but the "Link To" option in the web UI gave:
Link URL: https://www.mediawiki.org/wiki/Thread:Talk:MediaWiki_1.19/Reference_tooltips/reply Wikitext link: [[Thread:Talk:MediaWiki 1.19/Reference tooltips/reply]]
This URL worked.
Version: unspecified
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=25684
https://bugzilla.wikimedia.org/show_bug.cgi?id=49272