Am I just being thick. I've been adding some pictures (eg Middle Hill) and I have been deliberately careful to make the files small, and to make the longest edges not longer than 720 pixels etc.
But, if I put a comment on the picture, I end up with two pictures, one with the comment and one without. It looks like one from the page, but when you open the picture up, you can see there are two.

is it me or is anyone else finding the same?

sorry I'm new here.