This is a regression from 1.12 and before that has been marked as a “Not a bug” as it was a deliberate decision:
I really feel very strongly that you should be able to set custom Bricks editor permissions for individual WP users, whatever user permissions they are.
For agency workflows many clients need Administrator privileges for various reasons but we don’t want these clients being able to destroy the layout of the site by fiddling with the builder. We also have a variety of experience levels in the team and we’d like to be able to roll out slightly reduced privileges to certain internal team members.
This was possible in some limited fashion in all previous versions of Bricks. It’s also possible with Oxygen builder.
Using custom permission plugins in WP is a pain and doesn’t work well with all plugins all the time and We don’t want to go back through 50 Bricks sites generating custom permission levels for clients.
Please consider changing this decision to lock all administrator accounts into having full access.