Comment 6 for bug 1415495

This is even worse, it also happens if you enter the APN page without ever opening the custom APN editor. Just listing the APNs, it creates a new one each time the page loads. So every time you enter the page it adds an additional empty context. And to make that even worse, it'll never activate the original provisioned context again. Even with a reboot, the phone won't connect.

I'm able to easily reproduced this on mako with vivid-proposed 84.