Last modified: 2014-07-15 15:43:19 UTC
with wgUsePathInfo = false URLs like .../w/index.php?title=Email are always used. But Hovercards are not shown for which "href.indexOf( '?' ) !== -1" is true for a reason I don't know.
Change 146477 had a related patch set uploaded by Se4598: Show popups when wgUsePathInfo=false https://gerrit.wikimedia.org/r/146477