When a user moves a page from the main space to a userspace sandbox the move does not reflect in the Wikidata item (Wikidata site link should be removed automatically). Examples,
The same behaviour is happening when moving an article from main-namespace to draft namespace. Example: Q25548561 contains a link to en:Bilal Nagar although this page was moved on en-wikipedia on 8th Novmber 2019 to the draft namespace.
As a result, many site links in Wikidata does not exist.
P.S. Is there an easy way to find all such items?