I'm an admin on a modern Hub Team Site in SharePoint Online, with Full Control Permissions. I created a Document Library and enabled content types and added the Basic Page type so I can add pages to this library.
Whenever I try to create an entry in this library from the Basic Page option, I am able to create the page by naming the file, but the following step that should open the page in design mode shows this error:
Web Part Error: A Web Part or Web Form Control on this Page cannot be displayed or imported. You don't have Add and Customize Pages permissions required to perform this action.
I've seen various posts from the classic experience talking about the need to create a new permission at the site level with the required permissions, but doing that and adding my user which already has Full Control doesn't fix it.
How can this be the out-of-the-box experience for page content types in a document library for a user who already has full control?? Is this a long-standing bug?