Permission Bug - Page create fails within chapter if lacking permissions to view the parent book #912
Description
First, let me explain what I'm trying to do:
I have a book which is composed of several chapters. There's a new user who needs access to only a specific chapter in this book, he should be able to create and edit pages in this chapter, but he shouldn't be able to see the other chapters.
Before this modification, I activated custom permission for this book, where group "Telecom" has full access to it, and all chapters inherit this permission. So what I tried to do is: I activated the custom permissions on this chapter, enabled full access to "Telecom" group (to keep this permission), but I also enabled full access to the group this user belongs (it's a "personal" group, only he is in the group). So the permissions are like this:
So, what I realized is that he can't see the book. Ok, that's fine, I think that was expected, he can still access the chapter by using the URL or in the recents panel. The problem is, he can't create new pages, it gives him a 404 error.
I can't understand why this is happening, I gave full access to the chapter, but he still can't create new pages. I can solve this by enabling some permissions on the book itself, but then he would be able to see all the chapters.