Comment 17 for bug 204858

As mentioned in the Bug #562476, comment #5, see [1] for details :
"Yes, it's the same issue for sensible-browser too.

This is a long-standing issue, and it is well known that the alternatives system sucks for this type of thing. The alternatives system is not a user-configurable preference, but is a system-wide preference that can only be configured by the root user. In an ideal world, applications shouldn't be using x-www-browser and gnome-www-browser at all, as there are other ways to do this"

[1] : https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/562476/comments/5