Comment 6 for bug 1768609

I have managed to workaround this problem in Ubuntu 19.10
by creating a symlink inside directory /usr/share/applications
executed as root in terminal

ln -s org.kde.ksysguard.desktop ksysguard.desktop

ln -s org.kde.kexi-3.1.desktop kexi-3.1.desktop

the only side effect is that now they appear twice in installed applications menu