Google Site Command For Image Search Not Fully Working?

It seems that Google made a change, intentionally or unintentionally, to the site command within Google Image Search. When you do a basic site command, without appending keywords to the query, then Google will return no image results.

Here is a screenshot:

I spotted this via Kunjal Chawhan on X over the weekend and pined Google about it but I did not hear back as of yet.

I did notice that when you append a query to the end of the site command, it does return results:

I suspect this is a bug but what do I know…

Forum discussion at X.