If I create a new ethernet connection, fill in correctly 802.1x security options with correct password and save, it will immediately prompt for password. If I write in correct password once again, it will prompt me again and again, repeatedly. If I close prompt instead of filling in a password and look into a gui option of editing network connection, there is password missing and is missing in /etc/NetworkManager/system-connections/my-connection too. If I fill it into that file, it works as expected.
It doesn't work either on clean installation of Ubuntu 16.04, fully updated installation or even running from USB. In 15.04 everything worked fine.
Is it a bug? Is there any bug filled in for this? If not, could somebody fill in a bug?