We have not created a post in a while and I went to create one today. On the new post page I no longer see the selector section for featured image or the categories. I still see them if I go to edit existing posts.
See the two screen shots for what it looks like on old posts as opposed to for a new post.
I am using WordPress 6.02 with a Highend child theme but there is very little customization in the child theme, I don’t think that is affecting things.