Original Report: https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/894249

network-manager 0.9.1.90-0ubuntu5.1

Steps to reproduce:
1. right click on network-manager-applet, select Edit Connections
2. switch to Mobile Broadband tab, click Add
3. on "Set up a Mobile Broadband Connection" step, click Continue
4. on "Choose your Provider's Country or Region" step, select "my country is not listed" then click Continue
5. on "Choose your Provider" step, notice "Select your provider from a list" is disabled (as expected), click Go Back
6. on "Choose your Provider's Country or Region" step, select "United States" then click Continue

Expected result:
"Select your provider from a list" is enabled

Actual result:
"Select your provider from a list" is populated with some US providers, but is disabled