Comment 17 for bug 1542733

Got the same problem in my Xubuntu, it is REALLY annoying.
What is the point of that "Connect to hidden wifi" then?

lsb_release -a:
Description: Ubuntu 16.04.1 LTS
Release: 16.04
Codename: xenial

uname -a:
Linux ... 4.4.0-47-generic #68-Ubuntu SMP Wed Oct 26 19:39:52 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

dpkg -s network-manager-gnome:
Package: network-manager-gnome
Status: install ok installed
Priority: optional
Section: gnome
Installed-Size: 2032
Maintainer: Ubuntu Developers <email address hidden>
Architecture: amd64
Source: network-manager-applet
Version: 1.2.0-0ubuntu0.16.04.4

PS A tooltip over the dimmed "Connect" button reads as follows:
"Either a password is missing or the connection is invalid. In the latter case, you have to edit the connection with nm-connection-editor first."

What?