Last modified: 2014-06-09 12:46:06 UTC
The AbuseFilter variables added_links and removed_links don't seem to work (are always empty), also all_links seems to equal old_links. This is Wikibase specific, as it works with wikitext pages.
This can be fixed by either making Wikibase hook into AbuseFilter's "AbuseFilter-interceptVariable" hook (that might get messy). Or by doing some more work on ContentHandler support in AbuseFilter (which is also going to be a pain, given the way AbuseFilter "works").