After a long time, I needed to change something on a Bricksbuilder page, version 2.3.10.
So I was trying to create some new (custom) posts, but was not able to complete, as all custom fields are missing.
What changed over the last weeks?
I was able to verify, in a dev environment, that without updating metabox the fields were visible; after an update to the latest MB-version the custom fields are gone...
I have a custom post type, which is fully visible, and I can create those custom posts.
I created custom fields, which are/were assigned to that post type.
To be on the safe side, I deactived all code snippets (WPCodeBox 2) - no change.
So, what shall I do now?
Thanks for your feedback.