The issue is gone after upgrading gnome-control-center.
--- Bionic: ubuntu-18.04.2-desktop-amd64.iso Xenial: ubuntu-gnome-16.04.5-desktop-amd64.iso
The issue is gone after upgrading gnome-control- center.
--- 18.04.2- desktop- amd64.iso gnome-16. 04.5-desktop- amd64.iso
Bionic: ubuntu-
Xenial: ubuntu-