First of all:

        ls -i /         # to see the mount-point dir problem.

*What* problem are you talking about?  I see nothing wrong there.

Secondly:

        The inum displayed by ls -i on a symlink is the same as the file
        to which it points, or the inum of the current directory if the symlink
        doesn't point to an existing file.

This is not a `bug' per se; it was an explicit design decision in 4.4.