I just noticed an odd Wikidata entry in my watchlist:
"(diff | hist) . . D Wikipedia:Wikidata (Q42); 22:58 . . CaliViking (talk | contribs) (Changed [da] description: engelsk forfatter)"
The watchlisted change was made in the WikiData object for article "Douglas Adams" with ID Q42, however:
*I have not watchlisted this article and shouldn't see this change to begin with (not OK).
*I have watchlisted the page WP:Wikidata though (WikiData ID of this page is Q4847210), but the listed change has nothing to do with this page, the article link to "Wikipedia:Wikidata" is wrong and WP:Wikidata doesn't match with Q42 (not OK).
- Just a wild guess, but it looks like information about 2 different WikiData items has been mixed up somehow.
Specs: Windows XP, FireFox 47.01, Vector skin, "Show Wikidata in watchlist" activated in preferences