News Web Part "Add > News post" not working

We ran into a similar issue where the News post link wasn't working for our top-level hub site. We've given contribute access directly to the site using the SharePoint Visitors group to allow all users to create news posts. To prevent all users from editing the home page, we changed the access for that specific page in the Site Pages library to read-only for the Visitors group. Site Owners have full access the the site, including the home page, and could use the link fine. It looks like the user needs to have the ability to edit whichever page the News web part is presented on to use the "News post" link successfully. We thought we had this working with read-only access to the page as of about 10/7/2021. But as of 10/15/2021 the permissions appear to be preventing the use of that link without page edit permissions.

Our workaround for now is to:

- Create a separate page with instructions on creating news posts
- Add a link to the instruction page that links to the same page you get when clicking the "See All" link from a News web part. It's a system generated page that users with site contribute permissions can use the Add > News post link on, but they can't edit the actual page. The link will be something like "..._layouts/15/news.aspx?title=.....
- Add a button "Add News Post" and include it on the page where the News web part is posted. For us, this was a hub site home page marked read-only for our site Visitors group to prevent them from changing it.
- Deselect the "Show title and commands" option for the News web part to hide the Add button to avoid confusion as it won't work.