Comment 4 for bug 1730071

Sebastien: The icons where stretched as soon as I installed the appindicator extension. I have since installed other extensions (system-monitor and ubuntu-dock) but that hasn't affected the appearance of the icons.

> apt-cache policy gnome-shell-extension-system-monitor gnome-shell-extension-ubuntu-dock
gnome-shell-extension-system-monitor:
  Installed: 32-3
  Candidate: 32-3
  Version table:
 *** 32-3 500
        500 http://gb.archive.ubuntu.com/ubuntu artful/universe amd64 Packages
        500 http://gb.archive.ubuntu.com/ubuntu artful/universe i386 Packages
        100 /var/lib/dpkg/status
gnome-shell-extension-ubuntu-dock:
  Installed: 0.7
  Candidate: 0.7
  Version table:
 *** 0.7 500
        500 http://gb.archive.ubuntu.com/ubuntu artful/main amd64 Packages
        500 http://gb.archive.ubuntu.com/ubuntu artful/main i386 Packages
        100 /var/lib/dpkg/status