In T67117#8851919, @Quiddity wrote:

In T67117#7317297, @Sophivorus wrote:

This would be useful also for non-Wikimedia wikis linking to Wikipedia.

Big +1. I included that as part of the wishlist proposal (which I should've linked here earlier!) https://meta.wikimedia.org/wiki/Community_Wishlist_Survey_2023/Bots_and_gadgets/Make_Navigation_Popups_%26_Page_Previews_work_cross-wiki - to quote: "Add a Cross-wiki feature, so that the sister projects can more directly benefit each other, and every MediaWiki installation can get a built-in Wikimedia reference."

In T327653#11569006, @Aschmidt wrote:

<snip> I used the grandparents search, and one of my grandfathers indeed was shown as a search result, but then there were no more data. When I clicked on my grandfather's entry, the said error message was shown.

Emphasis mine.

In T327653#11684860, @MaplesyrupSushi wrote <snip> I cannot save documents/records directly to my family-tree on my regular Ancestry account using Ancestry's function. Instead, I have to find documents using my Wikipedia Library access to Ancestry, save the document to my computer locally etc.