Hi there,
I have one more comment on this thread.
This time I am testing version 6.1 of WordPress with Generatpress.
The new features (management of margins, borders, etc.) in the block editor are not accessible with Generatepress.
I also tested with Twenty-Two and Astra themes, and there everything works fine, all options appear fine in the editor panel.
I don’t know, if you plan to add this in the next version of GP?
Best regards.
Dominique