Last modified: 2013-06-26 03:05:57 UTC
From a bug report in /mnt/bugs on parsoid.wmflabs.org. The edited HTML snippet in question looks like this: "<a href="./Turkish_sparrow" rel="mw:WikiLink" data-parsoid='{"a":{"href":"./Turkish_sparrow"},"sa":{"href":"Turkish sparrow"},"stx":"simple","dsr":[92,111,2,2]}'><a href="American%20sparrow" rel="mw:WikiLink">American sparrow</a></a>" The editor may tried to edit a link from Turkish -> American sparrow
From: /mnt/bugs/2013-06-10T19:18:14.190Z-Golden-Crowned_Sparrow (editing done on mediawiki.wikimedia.org).
Another instance from /mnt/bugs/2013-06-11T19:33:15.924Z-VPN_blocking (on enwp) <a rel="mw:WikiLink" href="protocol%20tunnel"><a rel="mw:WikiLink" href="protocol%20tunnellng">protocol tunnell</a></a><a rel="mw:WikiLink" href="protocol%20tunnellng">ing</a>
I think this is one of the bugs that has been fixed by https://gerrit.wikimedia.org/r/70434
Speculatively marking as fixed; please re-open if it recurs.