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Extension creating duplicate items upon creation
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Description

I haven't been able to reproduce this manually, but I've seen it enough times to know it wasn't a freak incident.

Basically when a bot creates an item, two copies are created.

From https://www.wikidata.org/w/index.php?title=Q7213028&action=history

(cur | prev) 2013-03-14T07:19:22‎ Dexbot (talk | contribs | block)‎ . . (294 bytes) (+294)‎ . . (‎Created a new item: Bot: Importing article from Hebrew Wikipedia)

https://www.wikidata.org/w/index.php?title=Q7213029&action=history

(cur | prev) 2013-03-14T07:19:22‎ Dexbot (talk | contribs | block)‎ . . (294 bytes) (+294)‎ . . (‎Created a new item: Bot: Importing article from Hebrew Wikipedia)

Note that both were created in the exact same second, and given back to back numbers, which is usually impossible due to the high speed bots editing.

Additionally they are created with the same exact content, leading me to believe that the software is creating the extra item.

https://www.wikidata.org/w/index.php?title=User:Legobot/Dupes&oldid=12013815 is a list of quite a few more.


Version: unspecified
Severity: major

Details

Reference
bz46119