somenon-ASCII password not usable again

[M Parsa]

When we use the passwd, if our keyboard layout is not English same as Persian, the password is set successfully, but when we try to login after first restart the available keyboard layout for login only is English layout, And we never can login again for this bug.

If in login page other layouts available it's ok.
Or passwd must be don't accept any non-ASCII charterer .

Thanks

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: passwd 1:4.2-3.1ubuntu5
ProcVersionSignature: Ubuntu 4.8.0-41.44~16.04.1-generic 4.8.17
Uname: Linux 4.8.0-41-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: Unity
Date: Thu May 25 20:58:24 2017
InstallationDate: Installed on 2017-02-18 (95 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
SourcePackage: shadow
UpgradeStatus: No upgrade log present (probably fresh install)