Volumio V2 - Issue with Network Settings

Just started testing Volumio V2 with a PI3. So far mostly very nice.
I am using a wired network connection which sets up nicely with DHCP.
I rather use a static setting for greater control and when I attempt to do so, the option saves and then winds up with the same DHCP settings as before the save.

I am assuming its probably a cfg file permission thing but not sure where to start with the new version.
Any suggestions would be appreciated.
Great new update.