Its a problem. I have 3 nics, 2 internal and 1 external/wan. I set wan dhcp, and lan on there various subnets and when I save I lose all internet for good. Only way to fix is restarting networking services, after every reboot. Other than that, it is stable enough, Samba throwing fits but thats normal. I noticed they updated the network services but problem is still present after reboot. Its throwing dns resolution errors if that helps. I can replicate when I get home and take some screen shots of the config I have and the dns error the browser throws. Its just not resolving anything. This happens before any DNS settings have been changed, ie. stock. So in summary, are you replicating the issue on a clean install or did you try and actually set up and use the server functionality? It works on install, just breaks when we save network settings. I might try the new file later, if I can restore settings from the og 5.0 build.
Edit: Something got fixed!!!! I now see the proper gateway under network. Before, nothing was populating the interface section. Thats exciting.