After upgrading from Kubuntu 15.04 to 15.10, my wireless network adaptor cannot connect to a known network. Instead of auto connecting to known networks or at least connecting when I press 'connect' in the KDE network widget I now have to remove the known network and readd it. At that point it connects normally (at work or when tethering with my phone, but not at home where it does not want to connect at all anymore). If I want to reconnect to the network I have to repeat the same steps (delete and readd).
Does anyone have that same issue? What could be the cause/solution?
When I click 'Configure network connections...' and then try to edit an existing connection the network configuration manager window disappears instantly.