I use a custom framework with variables and global classes referenced in global stylesheets.
In the page editor, I can see this styling as I apply the classes. However, while editing templates, this styling isn’t visible in the backend. I would need to save, then view the front end to see the changes.
Screenshot attached showing backend, then frontend
I was able to take another look and I’ve found the issue. The variables reference an external stylesheet (it’s generated by a third party plugin - Agency Base), which works fine on the front-end.
I copied it into a Cwicly Global Stylesheet and it works as expected.
It seems for template back-end, Cwicly doesn’t look elsewhere for styling, but for page back-end, it does. I recorded my screen to illustrate this.
I have not ruled out this being a quirk of Gutenberg, but it was noteworthy to point out.
Thanks for clearing that up, as well as the video @owynter.
In fact, this is an issue with the plugin you are using because it would seem it is not using add_editor_style() to enqueue its assets in the Gutenberg editor.
This isn’t something that Cwicly should look out for in this particular instance.
I would contact the plugin author and ask them if they can take a look at it.