I see, not sure why the output is altered though, shortcode blocks should return them as is. There is probably a wp_kses hook somewhere forced on the full output, as I see multiple similar paragraph wraps on the rest of the page. It’s not a big deal, but for some reason it happens.
Either way, my mistake with the custom CSS, the order value should be 9:
.probox p:has(.promagnifier) {
order: 9;
}This will resolve it.