(Thank you Thomsen, Hub Rhein-Ruhr for finding and testing the solution)
Since our Labdoo images are based on GTK3 (MATE), icons in the LibreOffice menus are not supported by default. But you can achieve this by starting LibreOffice with the KDE Framework 5 (kf5). To do this, carry out these steps for all users (labdoo and student):
- Login as user labdoo, then run
sudo apt...