When the beta is installed there’s a whole bunch of styling injected that collectively mess up the block editor. For example, the post/page title is really small and with the font as is set for front end headings, the body text font size is really small, and the editor has a dark background.
It looks a bunch a Wordpress styles are being overridden by a “bricks-frontend-gutenberg-inline-css” stylesheet that gets loaded in, which was never there in earlier versions. Downgrading to v.2.3.10 fixes the issue.
We’re currently still working on a few Gutenberg/Bricks-style tasks, but we can’t reproduce your issue with the incorrect font sizes. It would be great if you could send us your login credentials again.
Normally, the styles used in the front end (such as the background color or typography settings for the body and headings, coming from the theme styles) should also be applied in Gutenberg so that it’s more closely resembles the website’s appearance (especially with components as blocks in use).
I’ve had to uninstall the beta because of this issue. It’s also not just font size—it’s a whole range of things. Basically look at the styles in this “bricks-frontend-gutenberg-inline-css” stylesheet—it’s overriding a lot and all styles it introduces are bad. If this stylesheet wasn’t loaded, it would be fine. I would recommend just NOT loading this stylesheet when using the block editor.
As I said, it’s probably the theme styles that are setting the font sizes and background colors in your case. In my case, they are also set, but correctly/as expected.
I’ve created an improvement task so that it will be possible in the future to exclude the theme styles from bricks-frontend-gutenberg-inline-css.
