Thanks.
Enable the option "Show on edit page" fixed the display issue. However, I'm not able to update the custom post if the taxonomies are enebled. I get this error message:
Fatal error: Uncaught Error: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "" not found or invalid function name
in /var/www/tocn.totalweb.dev/htdocs/wp-admin/includes/post.php on line 444
Call stack:
edit_post()
wp-admin/post.php:227
Kind regards
Rune