The following is copied from http://www.wikidata.org/wiki/Wikidata:Contact_the_development_team#.220.22_is_not_valid_label.3F
If label name is "0", I can't see the label. See Q23104, Q199453 and Q204. Is this a bug? Because I can see other numbers like 1. --Stryn (talk) 11:58, 2 January 2013 (UTC)
Hi Stryn, seems to be a bug. I can save the label "0" but "View history" does not show my edit. --Kolja21 (talk) 13:10, 2 January 2013 (UTC)
Yes, if you look "labels list", you can already see "0" there, and because of that you can't see your "edit" in history. --Stryn (talk) 13:12, 2 January 2013 (UTC)
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