Hi all.
after not changing anything knowingly actively on my system, all my quicklaunchers don't work anymore. No matter if it is old launchers or newly created ones, no matter on what panel or program I try to launch. If I click one very briefly I can see an entry in my task bar for WSVView. This seems to be some Windows 10 Linux service which is odd, since I never asked for anything like this and don't even have Windows installed.
journalctrl gives me a:
WSL interoperability disabled
grep: /proc/sys...WSLInterop: No such file or directory
/usr/bin/wslview: iine 216: /mnt/c/Windows/Syste32.....reg.exe: No such file or directory
/usr/bin/wslview: iine 308: [-ge: unary operator expected

Can anyone make sense of this and give me my Quicklaunchers back? As said I cannot simply create new Quicklaunchers, because new ones also have the issue.

Running Kubuntu 22.10 with a Plasma 5.25.5

THX fellows.

I recall seeing something similar. If I recall correctly it was due to the wslu package ( windows subsystem). It can kill the xdg/kde-open. You must've installed something windows-ish to call for it.

That was a good pointer in the right direction.
Links for a bit of background:
https://bugs.launchpad.net/ubuntu/+source/wslu/+bug/1971757
https://bugs.launchpad.net/ubuntu/+source/gimp-help/+bug/1971763

Turns out to be a bug already known in Ubuntu 22.04. Even though I installed Chromium and Firefox via Discover (Flatpak and Snap, respectivly), they are not recognized as providing the virtual www-brower package. As a matter of fact, die Ubuntu 22.10 package list does not even state the existence of a virtual www-browser package anymore, unlike previous versions of Ubuntu. Now when another program, in my case Gimp, needs some browser to read www-type files, the wslu package is installed as a backup, which normally is used to start a Windows webbroser.

What I did do to solve my issue:
- remove the wslu package (I used Synaptic, probably works on command line as well). This will also remove a Gimp doc package that requires www-browser and initially caused the installation of wslu
- install firefox using Synaptic (command line might work as well). Do not use KDE's discover. In Discover I have firefox entries using Flatpak and Snap. The Snap version was marked as "installed", however in Synaptic Firefox was not shown as installed. According to Synaptic Firefox provides the www-browser package, so having Firefox installed should prevent wslu from being reinstalled in the future in case another package requires www-browser again.
- this automatically triggered KDE to reinstall the missing Gimp docu package.

Well, it's solved then. Personally, one of the first things I do is to uninstall snapd and all the related packages altogether. I think wslu is also being installed if you use certain ppa's and wine stuff. As for firefox, I use the tar and fix my directories accordingly. I don't do firefox flat or appimg because I can't run them as ssb's so..