Back in the good old days -- perhaps even last week -- when you clicked on a photo in my blog to see the full-scale image, right and left arrows would appear on the screen. You could click on them to go directly to earlier and later images in that post.
No more. There's just an 'X' to take you back to the full post.
It's not me. It's a change in blogger. Now you must use the left and right arrow keys on your keyboard to navigate between photos without returning to the post's body.
Note that if you click on the images in a Facebook or Twitter post announcing a new blog entry, arrows will appear, but you will not see all the photos in the blog, just the four or so added to Facebook or Twitter to spark your interest.