Hi Betnhard,
Yes of course. If I edit a page or a post the PageBuilder tab is missing. Also the YOAST panel is blank.
Deactivating the JSON Content Importer will allow the PageBuilder tab to appear. It also allows the YOAST panel to show the correct information.
I have tested with just YOAST Active and just PageBuilder active and the JSON plugin affects both plugins individually.
I hope that helps?
Abe