Blurry book cover in catalog

The covers of the books in my institution’s catalog look really blurry and low-res in the catalog, but they look fine on the book home page, and the images themselves are high resolution and meet Pressbooks’s image quality guidelines. Any ideas on how to fix, or is it just a catalog bug?

Probably a catalog bug. Can you give me a link to the catalog where blurry images are appearing and we can take a look? Hopefully this will be a quick fix …

Thanks for your quick reply! Here’s the link: