Directory not listing after a chdir()

[m13253]

My distro: ArchLinux
Kernel version: Linux brilliant-laptop 3.16.3-1-ARCH #1 SMP PREEMPT Wed Sep 17 21:54:13 CEST 2014 x86_64 GNU/Linux
Mbox version: a131424

How to produce:

$ mbox bash
$ pwd
/home/brilliant
$ ls
Desktop Documents Downloads Music Pictures Public Videos
$ ls .  # Relative path
Desktop Documents Downloads Music Pictures Public Videos
$ ls /home/brilliant  # Absolute path
(empty)
$ ls /
(empty)
$ cd /home/brilliant  # Magic happens after cd
$ ls
(empty)
$ ls /
home  # Was empty before cd

What to expect:

• Consistent behavior before cd and after cd

I would like to know, is the inconsistency a bug or a feature? If it is a bug, could you please fix it?