New update breaking my site css on admin side

@jamesosborne @reneesoffice For the good of the order, I have also confirmed that Site Kit is breaking my front end, resulting in a page that looks like this: https://share.getcloudapp.com/7Ku0ngGJ. When I disabled the Site Kit plugin, the issue goes away. When I re-enable, it comes right back.
After reading @reneesoffice post about the WP External Link update, I ran it and it seems to have fixed the issue.

INterestingly, this also fixed another problem I was having with Site Kit, which was that it had disappeared from the Admin bar. After the WP External Link update, it came back!

@tomkraeutler thanks for sharing your experience. I’m glad that resolved it for you. If you have any further questions, please feel free to open a new support topic.