text-scaling-factor changes from 1.0

[Andreas E.]

After upgrading from Ubuntu 15.10 to 16.04, org.gnome.desktop.interface.text-scaling-factor is not anymore set to 1.0 (as before upgrade) and it does not want to be set to this value.

When setting it via gnome-tweak-tool or dconf-editor, it grows again to 1.1875 which makes all fonts noticeably bigger than normal. This happens with other input too, when inserting 0.5 it will grow to 0.59.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: gnome-settings-daemon 3.18.2-0ubuntu3
Uname: Linux 4.2.0-040200rc3-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Fri May 13 10:32:11 2016
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-06-06 (341 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
SourcePackage: gnome-settings-daemon
UpgradeStatus: Upgraded to xenial on 2016-05-12 (0 days ago)