nm-connection-editor asks passphrase but does not connect automatically

[G.M.]

Hi,

When I log into my Ubuntu (dist-upgraded today), I see a pop up a dialog (from seahorse?) that asks for my passphrase. I assume it is called by the nm-connection-editor/NetworkManager/the related tray icon for network management), since it's the only thing that requires this kind of passphrase right now.
I enter the correct passphrase, then then nothing happens, no network is connected to.
However, I've at least one wifi network that is configured to "Automatically connect to this network when it is available" and that wifi network IS available.

As a conclusion, I don't now really where the bug is, but the option "Automatically connect to this network when it is available" does not work, particularly in the case where you have protected your wifi keys inside a wallet.