The latest firmware update of the Internet-Box plus seems to have broken the support of wired ethernet ports on the GUI.

Luckily the wired ethernet ports still work, otherwise I would not be able to write this message!
Still, this is very disturbing as NOT a single device which is connected via the ethernet wire is visible on the GUI, nor on the DHCP server list of assigned addresses, in spite of the fact that the IP addresses are given out normally.
The network topology visualization shows no devices either, which is false:

These are the details of my router:
Device Name Internet-Box plusManufacturer SiligenceSerial Number 5.01409F0C39708Model SGA441SW
Firmware Version 10.01.36 / 10.01.50DECT version 0412.14Web portal version 01400
Am I the only one experiencing this issue with the wired ethernet port on this router?
Thanks, Luca