Description

When switching style variations, the font faces defined in those variations are not loaded in the editor but after the page is reloaded.

Step-by-step reproduction instructions

1. Switch to a theme style variation with custom font faces defined.
2. Check that the fonts are not loaded in the editor until the page is refreshed (browser reload).

Screenshots, screen recording, code snippet

Look at the headings when a theme style variation is applied, they render the default font until the page is refreshed:

Environment info

• Gutenberg trunk

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes