Finally it is fixed, not as nicely as I would have liked it but here it is. Under the comment box there is a link you may click to add a new image. Then just enter the URL to the image itself and it should work. Do not enter the URL to the Flickr page the image is displayed on, your URL should end in a ”.jpg” ending. When you see an image you want to post the link to, right-click and then select ”copy link location” or similar, that’s the URL you should enter here.
Hope that makes life easier for commenting on the photo challenges!
Have fun!