Avast Free Antivirus Network Inspector didn't show scan results of the private network

After starting the network inspector and the network scanner, you want to minimize the window because the scan takes quite a long time.
However, the result of the network scan is only presented if the window remains open; the window takes up the entire screen and can only be reduced in size by minimizing it.
If the scan window is minimized, the result of the network scan is not displayed or is skipped. The pop-up window “No problems found in the network” is presented.