'cd' command missing features

[dino99]

I was surprised to discover that 'cd..' command which i have used in the past, now is unknown.

cd. & cd.. features are so simple to use, to step back one level or two, i can't imagine they have been dropped by decisions. Please set them back.

oem@u64:~$ cd /var/
oem@u64:/var$ cd lib
oem@u64:/var/lib$ cd.
No command 'cd.' found, did you mean:
 Command 'cde' from package 'cde' (universe)
 Command 'cdv' from package 'codeville' (universe)
 Command 'cd5' from package 'cd5' (universe)
 Command 'cdw' from package 'cdw' (universe)
 Command 'cdo' from package 'cdo' (universe)
 Command 'cdi' from package 'cdo' (universe)
 Command 'cdb' from package 'tinycdb' (main)
 Command 'cdp' from package 'irpas' (multiverse)
cd.: command not found
oem@u64:/var/lib$ cd..
cd..: command not found

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: bash 4.3-15ubuntu1
ProcVersionSignature: Ubuntu 4.8.0-16.17-generic 4.8.0-rc7
Uname: Linux 4.8.0-16-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.3-0ubuntu7
Architecture: amd64
CurrentDesktop: GNOME
Date: Sat Sep 24 13:18:40 2016
SourcePackage: bash
UpgradeStatus: No upgrade log present (probably fresh install)

[Matthias Klose (doko)]

that never worked before, however you can set your own aliases