password box doesn't appear sometime when I hit enter or Tab, and some themes didn't work

[Heinko94]

after I changed DE from ubuntu-desktop to Gnome3
it get some errors on Gnome3 and therefore I changed back to default DE
and this didn't works well too

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.20 [origin: unknown]
ProcVersionSignature: Ubuntu 4.4.0-57.78-generic 4.4.35
Uname: Linux 4.4.0-57-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
CrashDB: ubuntu
Date: Tue Jan 10 03:38:07 2017
EcryptfsInUse: Yes
InstallationDate: Installed on 2016-11-01 (69 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: No upgrade log present (probably fresh install)
VarLogDistupgradeTermlog:

mtime.conffile..etc.update-manager.release-upgrades: 2016-11-04T01:45:48.662827