We have an issue where a specific user account has all the meta groups in the right sidebar even non-ACF (like Yoast) fields edit-post-layout__metaboxes exist but not working for this user. No errors in the dev console. I’ve looked in to this post and changed settings back and forth with no luck.
All our ACF groups have style Standard (WP metabox), any idea why this is happening?
I was experiencing the same issue and it seems to be related to Gutenberg.
The following seems to have worked for me:
1. Install and activate the Classic Editor plugin
2. Reorder the group position
3. Disable the Classic Editor plugin
That was an easy fix, thank you