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.
Update: John Mueller from Google replied to these concerns on LinkedIn and said, "Seems weird, thanks for pinging."
Update on September 27 at 5:40pm ET: It seems the site command fix is being rolled out now. I see it working on some Google data centers as of 5:40pm ET.
Here is a screenshot:
Update: October 2nd: Seems broken again...
