Es handelt sich um ein Verhalten, das von Debain ausgelöst wird. Installiert man folgende Erweiterung, wird das Icon angezeigt:

https://extensions.gnome.org/extension/615/appindicator-support/

System Environment

Please note the official system requirements for each application before installation. If your system does not meet these requirements, we cannot guarantee the smooth and stable operation of our software.

Direct Manufacturer Support

We are pleased to offer professional support and services on the way to digitalising and archiving your documents.