Steps to reproduce:

`sudo yast2 lan`, select a WLAN card -> Edit -> Scan Network

Observed behaviour:

A window with "Scanning networks", "obtaining ESSIDs" shows up, but closes
again before any networks show up.

Expected behaviour:

A list with the wireless networks shows up.

Comments:

The WLAN card is already connected to a network while I'm trying to scan.

There are SSIDs nearby that include spaces.

I also tried entering an SSID with a space, but at least in text mode, yast
doesn't let me enter spaces.

SSIDs with spaces are that not uncommon (e.g. "John's iPhone").

System:

openSUSE Leap 15.2