Last modified: 2013-03-20 17:31:32 UTC
E.g.: http://wikidata.org/w/index.php?title=Q3595948&oldid=6513087&uselang=as If you click edit on alias the duplication is not shown anymore. If you remove this alias and click save an error occurs: "An error occurred while trying to perform remove and because of this, your changes could not be completed."
On "Remove duplicate aliases" I used Special:SetAliases (turn off Javascript) to create duplicates by removing array_unique in line 334 of Entity.php. After that I used ordinary JS-driven UI-editing to verify that the item with duplicates was available and editable. The duplicates was then edited or removed without any errors.
https://gerrit.wikimedia.org/r/#/c/49670
*** Bug 45139 has been marked as a duplicate of this bug. ***
Verified in Wikidata demo sprint 35-2