Wi-Fi only connectable through "connect to hidden network" option - After upgrade to UbuntuGNOME 17.04

[Markus Steinko]

Hey there,

upgrading my system to UbuntuGNOME 17.04 worked like a charm. The system 
is running stable and there are currently no critical bugs to report.
But I could only connect to my wireless connection with using the 
"connect to hidden network" settings after the upgrade.
The network manager couldn't find and still won't find any network or 
access point. It starts searching, but without success. I have to go 
this way after every reboot. I think this could be a bug, some more 
people could be affected of.

With best regards,
Markus