Default Lenovo S6000 + Bluetooth keyboard App launcher button issue

Hi,
I've had this issue ever since getting my Lenovo S6000 with the Lenovo Bluetooth Keyboard.

I am currently using the Nova launcher, and the issue arrises when I click the "App Launcher" button on my keyboard. It launches the OLD app launcher and NOT nova launchers app list. Can this be fixed at all? All the other android specific buttons work perfectly within Nova.

Thanks