https://login.wikimedia.org/wiki/Special:Version?printable=yes
It works, it's just not displayed. I can use there being some use to printing certain special pages (lists of users etc), so we might aswell show the option.
The sidebar has generally less items on special pages anyway...
Version: 1.22.0
Severity: enhancement
URL: https://login.wikimedia.org/wiki/Special:Version?printable=yes