Imgur recently started restricting access from the United Kingdom, with hotlinked images now showing a "Content not viewable in your region" image instead.
I am not accessing from the UK, and if I open the links directly I can see the images correctly; however, in Kagi Image Search when I click an image that is hosted on imgur, the preview shows this error, presumably because Kagi's proxy is accessing from the UK.
This is easily reproducible by searching for site:imgur.com:
https://kagi.com/images?q=site%3Aimgur.com
This is what I see after clicking one of the results in that page:
Sometimes images are previewed correctly, maybe because of proxy cache or maybe proxy access from a different location, but most seem to show the error image.
The expected behaviour is to see a preview of the image in a scale larger than the thumbnail in the search results grid, instead of an error image.