Wired LAN cannot be set to manual

Hi,

I am running KODI on LibreELEC 9.1.501 on a RPi4 and have a problem with setting my LAN to manual mode.

In KODI I go to

System -> LibreELEC -> Connections

There I select the Wired connection, choose Edit and then under IPv4, I set the IP Address Method to Manual and insert my address and netmask. If I then press Save, it goes back to the Connections overview but the Wired connection does not change. It sits on dhcp/auto.

I tried rebooting, I tried unplugging the ethernet cable, I tried disconnecting the connection before adjusting the settings ... it remains the same. I can set the Wired connection to manual and save it but if I go back into the connection settings, it has been set back to dhcp/auto.

Any idea?

I just tested this in LibreELEC 9.1.502 and the problem is still there for me.