Bug#943485: gnome-shell: missing bottom left hidden app background indicator (stretch:ok>buster:not ok)

[wim]

Package: gnome-shell
Version: 3.30.2-9
Severity: normal

Hello,

running apps that use the 'background indicator in the left bottom corner'
are unmanagable, as this indicator is not there anymore 

stretch: indicator present
buster: indicator not present

eg bug #914792 is an example of this

tested on 2 systems:
* upgraded machine: stretch>buster
* new buster (vm)
> both have this issue

hth,
Wim

-- System Information:
Debian Release: 10.1
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.19.0-6-amd64 (SMP w/8 CPU cores)
Locale: LANG=nl_BE.utf8, LC_CTYPE=nl_BE.utf8 (charmap=UTF-8) (ignored: LC_ALL set to nl_BE.UTF-8), LANGUAGE=nl_BE:nl (charmap=UTF-8) (ignored: LC_ALL set to nl_BE.UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages gnome-shell depends on:
ii  dconf-gsettings-backend [gsettings-backend]  0.30.1-2
ii  evolution-data-server                        3.30.5-1
ii  gir1.2-accountsservice-1.0                   0.6.45-2
ii  gir1.2-atspi-2.0                             2.30.0-7
ii  gir1.2-freedesktop                           1.58.3-2
ii  gir1.2-gcr-3                                 3.28.1-1
ii  gir1.2-gdesktopenums-3.0                     3.28.1-1
ii  gir1.2-gdm-1.0                               3.30.2-3
ii  gir1.2-geoclue-2.0                           2.5.2-1
ii  gir1.2-glib-2.0                              1.58.3-2
ii  gir1.2-gnomebluetooth-1.0                    3.28.2-4~deb10u1
ii  gir1.2-gnomedesktop-3.0                      3.30.2.1-2
ii  gir1.2-gtk-3.0                               3.24.5-1
ii  gir1.2-gweather-3.0                          3.28.2-2
ii  gir1.2-ibus-1.0                              1.5.19-4+deb10u1
ii  gir1.2-mutter-3                              3.30.2-7
ii  gir1.2-nm-1.0                                1.14.6-2
ii  gir1.2-nma-1.0                               1.8.20-1.1
ii  gir1.2-pango-1.0                             1.42.4-7~deb10u1
ii  gir1.2-polkit-1.0                            0.105-25
ii  gir1.2-rsvg-2.0                              2.44.10-2.1
ii  gir1.2-soup-2.4                              2.64.2-2
ii  gir1.2-upowerglib-1.0                        0.99.10-1
ii  gjs                                          1.54.3-1
ii  gnome-backgrounds                            3.30.0-1
ii  gnome-settings-daemon                        3.30.2-3
ii  gnome-shell-common                           3.30.2-9
ii  gsettings-desktop-schemas                    3.28.1-1
ii  libatk-bridge2.0-0                           2.30.0-5
ii  libatk1.0-0                                  2.30.0-2
ii  libc6                                        2.28-10
ii  libcairo2                                    1.16.0-4
ii  libcanberra-gtk3-0                           0.30-7
ii  libcanberra0                                 0.30-7
ii  libcroco3                                    0.6.12-3
ii  libecal-1.2-19                               3.30.5-1
ii  libedataserver-1.2-23                        3.30.5-1
ii  libgcr-base-3-1                              3.28.1-1
ii  libgdk-pixbuf2.0-0                           2.38.1+dfsg-1
ii  libgirepository-1.0-1                        1.58.3-2
ii  libgjs0g                                     1.54.3-1
ii  libglib2.0-0                                 2.58.3-2+deb10u1
ii  libglib2.0-bin                               2.58.3-2+deb10u1
ii  libgstreamer1.0-0                            1.14.4-1
ii  libgtk-3-0                                   3.24.5-1
ii  libical3                                     3.0.4-3
ii  libjson-glib-1.0-0                           1.4.4-2
ii  libmutter-3-0                                3.30.2-7
ii  libnm0                                       1.14.6-2
ii  libpango-1.0-0                               1.42.4-7~deb10u1
ii  libpangocairo-1.0-0                          1.42.4-7~deb10u1
ii  libpolkit-agent-1-0                          0.105-25
ii  libpolkit-gobject-1-0                        0.105-25
ii  libpulse-mainloop-glib0                      12.2-4+deb10u1
ii  libpulse0                                    12.2-4+deb10u1
ii  libsecret-1-0                                0.18.7-1
ii  libstartup-notification0                     0.12-6
ii  libsystemd0                                  241-7~deb10u1
ii  libx11-6                                     2:1.6.7-1
ii  libxfixes3                                   1:5.0.3-1
ii  mutter                                       3.30.2-7
ii  python3                                      3.7.3-1

Versions of packages gnome-shell recommends:
pn  bolt                  <none>
ii  chrome-gnome-shell    10.1-5
ii  gdm3                  3.30.2-3
ii  gkbd-capplet          3.26.1-1
ii  gnome-control-center  1:3.30.3-2~deb10u1
ii  gnome-user-docs       3.30.2-1
pn  iio-sensor-proxy      <none>
pn  switcheroo-control    <none>
ii  unzip                 6.0-23+deb10u1

Versions of packages gnome-shell suggests:
ii  gir1.2-telepathyglib-0.12   0.24.1-2
ii  gir1.2-telepathylogger-0.2  0.8.2-3

-- no debconf information