Link with image only expands when page resizes

Any ideas why when I load this page some of the images are the right size while some are too short, but if I resize the browser, all of the images suddenly expand to the correct height and stay there?

This is after I load the page:

This is after I resize the browser:

And this is after I make the browser bigger again:

These pictures are link elements with an img src tag in them like so

This tells me the link elements have a max width but no minimum width. I can’t remember if links have the min width option, but if not, you could make them fixed width to keep them stable. Or move the image o an image element and place a transparent link element over it if you’re going for the new tab function.