Errata ROSA Desktop R4
From Rosalab Wiki
HP Control Center icon is missing in the tray, though HP printer is connected
HP Control Center is launched automatically during system start up only if you have HP printer connected to your system at boot time. If you connect a printer when the system is up and running, then this program will be launched automatically only after reboot. However, you can launch hp-systray program manually at any moment.
Bibliography Database doesn't work in LibreOffice Writer
In order to make "bibliography database" service work in LibreOffice, you should install LibreOffice Base (libreoffice-base package) and OpenJDK. To save space, we have removed these packages from Desktop R4 installation image.