Comment 9 for bug 2063353

I can confirm the statement of Adrian (comment #5).
As a workaround I added the option "--backends snap-backend,packagekit-backend" to the following .deskop-files:
org.kde.discover.apt.urlhandler.desktop
org.kde.discover.desktop
org.kde.discover.snap.desktop
org.kde.discover.urlhandler.desktop

Seems to work properly now, now leftovers in system monitor after closing discover which prevent launching discover's gui before.

OS: Ubuntu Studio 24.04
Kernel 6.8.0-35-lowlatency
Graphics Platform: X11