With the application started and two different callsigns available (i.e. NOCALL and your personal callsign)
- Open Preferences dialogue
- Change Callsign
- Close Preferences
- Observe main window still displays old callsign
- Select the list view in the main window
- Select the information view in the main window
- Observe the callsign is now updated
Changing the symbol has an immediate effect on the main window. However it does not force the callsign to update.