Comment # 50 on bug 1084943 from Jonathan Kang

(In reply to Frank Kruger from comment #49)
> I do not know what is wrong with the logs, you are the expert! What I can
> say is that the issue still exists: After logout/login I first get the error
> message(s) "no password provided/wlan deactivated", but then kwallet opens,
> asks for the password and the connection is established.

The only thing that leads to such a behaviour is NM detects the AP support some
WPS method and decides to negotiate with the AP. It might be due to the AP
settings. There is nothing wrong the NM code.
> 
> Since the issue seems to be solved by disabling wps via nmcli, it is very
> likely that your observation is correct.

Yep, as you said, you can disable wps method via nmcli to avoid this.