Last modified: 2013-10-15 20:51:10 UTC
In a fix to bug 32168 r103208 in line 458 introduced a case where relative URL (the one NOT containing "/") will *not* be expanded with $wgServer. This caused bug 37868 as well as ancillary issue with bug 38048 (wrong redirect). I believe this behaviour should be reinstanted
Change 87482 had a related patch set uploaded by saper: wfExpandUrl should expand relative URLs, too https://gerrit.wikimedia.org/r/87482