Ah, yes, ouchie.
I don’t know if it worked previously, as category images don’t display nicely in many cases: Include category logo aspect ratio in setting description - #2 by Canapin
I’m not familiar with this theme component, but it could be resolved with this CSS:
.category-boxes .category-logo img {
max-width: 100%;
height: auto;
}
This particular issue seems to be related to the component, but maybe better handling of category images in general could make this component inherit from a new behavior and display images nicely by default.
Fixed with