Link fonts wrong size on live site

Thanks to the new update(s), Twentig is mostly working on my site! I’m still seeing one strange behavior though. For links (in this case, a post title in the “latest posts” block) something is getting mixed up between the preview and the live site. everything looks normal in the preview (medium small font) but then is gigantic on the main site (my H1 for content is intentionally huge and it looks like it’s the same size). any ideas on why this would happen?

Un-toggling this font-fize CSS line in dev tools seems to fix it, if this helps:

.wp-block-latest-posts.tw-heading-size-medium li > a {
font-size: var(--wp--preset--font-size--large)!important;
}