Last modified: 2013-09-23 10:38:47 UTC
Repro: 1. On [[Q1]] which has a sitelink to [[zh:A]] 2. Click [edit] on zh sitelink then move it to [[Q2]] 3. Click [add] to add another sitelink 4. Input "zh" in language (site id) box 5. 中文 (zh) is not listed in dropdown.
I cannot reproduce this one. It might be a bug with the "move" widget. I do not have the [move] command on pressing [edit] in step 2. When I do the following, it works OK: 2. Click on [edit] and [remove] Steps 1 and 3-5 as above.
This is indeed specific to the user of the Move gadget which is located at [[MediaWiki:Gadget-Move.js]]. I have posted this bug at http://www.wikidata.org/wiki/MediaWiki_talk:Gadget-Move.js#Unable_to_create_a_site_link_to_a_site_if_a_link_to_the_site_has_just_been_moved_.2849102.29 where someone familier with the gadget should be able to fix the issue.
Closing as this is a gadget bug and the gadget author has been informed.