As the title says, if I press meta key when my keyboard is captured like in virtualbox or gnome boxes, KDE application launcher opens always. Pressing Meta key twice does the desired job. By captured I meant even keys like alt-tab goes into the VM only. I find this issue in plasma 20 and 19 ad some previous versions. I configured meta+Z as shortcut to application launcher, before that pressing meta key did nothing (I know why).

Can this be solved by some configuration changes?

Thanks.