All Meta Box Builder are empty and non-reactive in admin UI.
All text content for each Meta Box is now empty on my website.
I don't know exactly since when this problem appears, maybe since the last WordPress upgrade 5.5.
Can you help me?
Meta Box Version 5.3.3
PHP version: 7.0.16
Thanks for your reply.
I disabled all plugins except Meta Box, MB extensions and switch to the default theme of WordPress (Twenty Twenty).
MB Builder is no longer visible after these action, see result on screenshot: https://prnt.sc/u4bi6j
The theme Stratus is a premium theme so I'm not able to check the issue with this theme. It seems the theme uses Meta Box as a library to create meta boxes, please try to contact the theme support to ask for help in this case.