Recently it has become impossible to change the author of any posts on my blog. I am administrator off the blog. Other admins have the same problem.
It doesn't seem code related; I've checked out older versions in git off which I'm sure it worked, but the option is still gone.
I've already checked my user capabilities, I have the "edit_others_posts" capability.
I have disabled all plugins, but that didn't help.
Is there some setting that is stored as a user setting that might by accident have been changed?
The dropdown only shows when there are multiple users with author rights available.
I had only my own admin account and several subscribers locally, in which case apparently the dropdown doesn't render at all. In production, there is a different bug that has the side effect that the author dropdown also doesn't render.