device: 0.846
graphic: 0.802
performance: 0.637
semantic: 0.569
other: 0.568
permissions: 0.517
debug: 0.480
vnc: 0.240
PID: 0.170
socket: 0.125
boot: 0.122
network: 0.119
files: 0.117
KVM: 0.045

Grab Input not working only for Windows key
Description of problem:
When Input Grabbing is enabled (as seen in the menu and the Qemu window title itself), a press on the Windows key will also send that press to the host system (Arch / KDE).

I expected all inputs to be grabbed and stay within the VM.
Steps to reproduce:
1. Open a QEMU instance in a Arch / KDE host (not fullscreen)
2. Focus the instance and enable Input Grabbing (Ctrl + Alt + G)
3. Press the Windows key