Howdy, @aprildoty!
Thanks for writing in! As always, please remember when writing in support to provide URLs to live pages so we can see the issue firsthand to provide feedback. There could be any number of items that cause a particular issue, so we always need to see live links to ensure that we can provide the quickest and most efficient support for everyone. Thanks!
That being said, if things are appearing normal on one end but not the other, that certainly seems to point to a caching issue. Please see our Update Guide currently linked in the notice at the top of the site. It will walk through things in much more detail, but in general you’ll want to make sure to get clear all cache sources (browser, plugins, CDNs, et cetera).
If things are still having a problem after reviewing those resources, let us know and please provide us with some live URLs to look into things a bit further.