It was discussed here a while back. The settings via the new icon weren't pervasive, and the behavior was flaky. For instance, if bluetooth was off it is supposed to be turned on when you select a phone for internet access-- and it didn't always happen. Right now it appears my complaints were solved... I just have new ones...

EDIT: I can now browse the internet using my phone, and Application Manager can now refresh.

It appears that one or more installed apps interfered with the connection: rdesktop, VNC Viewer, or a vpn app custom designed for a certain company. I suspect the latter and will troubleshoot.