Image resizing unexpectedly

Hi everyone, newb to Webflow here. I’m having a stubborn problem with a png image within a lightbox suddenly transforming into a tiny thumbnail after publishing. It appears correctly in preview and read only, and I cannot for the life of me figure out what’s going on. I tried rebuilding the section from scratch, replacing it with a module that works elsewhere without issues, and resizing the original image, with no luck. Any help would be much appreciated. Here’s the read-only link:
https://preview.webflow.com/preview/jeffreys-blank-site-1632d9?utm_medium=preview_link&utm_source=designer&utm_content=jeffreys-blank-site-1632d9&preview=7f23b58e2ed48949b4f74841f7c13563&pageId=605155aeb9ccb9e3cc48fb6b&mode=preview


Here is my site Read-Only: LINK
(how to share your site Read-Only link)

Hi Jeffrey. Did you manage the issue? It appears that I have the same Issue with an image: https://theresas-portfolio-ea2b86.webflow.io/

The big image with the two persons suddenly turns small. If I change any property on the side panel it resizes again. As soon as I publish my site it turns small. Happy to get any feedback on this.