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I opened the System Settings application under the KDE menu. I scrolled down to
the bottom and clicked on YaST under System Administration. As soon as a click
that a dialog pops up saying that System Settings has closed unexpectedly and
the System Settings crashes. It is worthy to note that I can simply search for
YaST and click on the first result that pops up in the KDE menu which is
'YaST(Administrator Settings)' and it opens up and works fine.

Reproducible: Always

Steps to Reproduce:
1. Super key(Windows key) to open KDE menu
2. Click on 'System Settings'
3. Scroll down to System Administration and under this there are 2 entries,
'System Information' and 'YaST'
4. Click on YaST
5. Dr Konqi dialog pops up on bottom right of the screen saying 'System
Settings Closed Unexpectedly'
Actual Results:  
As soon as I perform the above steps a Dr Konqi dialog pops up on bottom right
of the screen saying 'System Settings Closed Unexpectedly'. The System Settings
crashes and YaST fails to open.

Expected Results:  
YaST administrator settings should have opened.

It is worthy to note that I am using the default theme and have installed
openSUSE Leap 15.2 RC using ext4 and not btrfs. And as to why I'm not using
ext4 is described below:
(Irrelevant to this issue: Btrfs on Tumbleweed was causing race conditions
because of which all btrfs sub volumes were getting unmounted right after they
were getting mounted and I could not access my snapshots without manually
mounting each time and this was a systemd bug that isn't fixed and therefore I
used ext4. More info here
https://forums.opensuse.org/showthread.php/538011-Btrfs-subvolume-snapshots-not-automounting-correctly-on-one-specific-machine
)