Mounted disks not shown on desktop after enabling ubuntu-dock in Tweaks

[Wolf Rogner]

After enabling ubuntu-dock in Tweaks, disks get mounted, are shown in Nautilus side bar but the desktop icon is missing.

This leads to the risk of disconnecting a disk that is mounted or write operations are in progress.

How can I enable the feature again that disks that get mounted are shown on the desktop?

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: gnome-shell-extension-ubuntu-dock 64ubuntu7
ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6
Uname: Linux 5.0.0-13-generic x86_64
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Apr 22 23:25:53 2019
InstallationDate: Installed on 2018-04-30 (357 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageArchitecture: all
SourcePackage: gnome-shell-extension-ubuntu-dock
UpgradeStatus: Upgraded to disco on 2019-04-19 (3 days ago)

[Wolf Rogner (war-rsb)]

I think triaging to gnome-shell-extensions might be the wrong approach in this case.

The icons did appear before and do appear in other installations. It is just on this machine that after enabling ubuntu-dock they do not appear any more (I do not want to verify this behaviour on any other machines as the missing icon leads to dirty unmounts)

There must be a setting somewhere to enable disks again. There used to be a setting in gnome-tweak-tools (but was left out in gnome-tweaks). Also there was a setting in gsettings / dconf which is gone as well.

So the question is: Where does UBUNTU (and not Gnome) store its setting about how to deal with mounted devices?