Starting yesterday I started noticing many many complaints in the Google Web Search Help Forums about Google Image Search. In short, some users were unable to trigger the preview to show a larger image, even after clicking on the image. Google is aware of the issue and is working on a fix.

Andy B. from Google wrote:

I am not able to replicate this myself, so maybe a fix has begun to roll out or maybe I was never impacted.

There seems to be complaints from all types of users, using all types of browsers.

Forum discussion at <a href="Google Web Search Help Forums.

Update: Andy posted later saying “Writing to confirm that the issue beginning ~Aug. 28th, 2018 should now be fixed.”