ignore cmd in VM when pressing CMD + tab to switch window

Running Windows virtual machines in UTM. I've noticed that many keystrokes and key commands are still passed to the VM even if the input isn't captured. This presents an annoying issue when you press cmd + tab to switch to another MacOS window, as the cmd key triggers the windows start menu every time. Could there be an option to stop modifier keys being passed unless the input is captured, or ideally stop any key being passed unless the input is captured?