I have the following problem:
I have created a new role. Unfortunately, do not allow pages / posts edited via the Admin menu. Only with the direct link it goes.
The link look like this: xxx.me/wp-admin/edit.php### instead of xxx.me/wp-admin/post.php?post=2496&action=edit&lang=en
when the user has the long link with the id he ca open and edit the page/post.
Is the same problem happened for the built-in role, like ‘author’?
Try to deactivate all plugins and check? If problem will go away, activate plugins back one by one to isolate a problematic code.