New Editor CSS classes in 4.0?

Hi,

after upgrading to Gutenberg 4.0 my complete backend was messed up. On every edit screen no matter if default or custom post type my ACF-Plugin field groups were displayed – at least the headlines with empty dropdowns. That was quite shocking guys! Thought I lost all my work until I deleted the browser cache. Looks good now but can’t you give us a hint before upgrading? I mean it’s not rare that people use advanced custom field in their theme.

Respecting your hard work anyway! It’s going to take a while until everything will run smooth especially in combination with other plugins but in the end it’s going to be a really nice editor you created!