Difference in NumPad processing in Linux vs Windows

On my Windows 8.1 machine if NumLock is ON and I press Shift+KP_1 Then KP_1 acts as KP_End as it logically should. But in Linux(Manjaro/Fedora/Ubuntu/MX Linux) if NumLock is ON and I press Shift+KP_1 It still acts as KP_1 and not as KP_End. **Why is there a difference in behaviour ?** **How do I get the numpad keys to act as End, Home, etc when NumPad is ON and Shift is pressed ?** Edit: VBox messes up the keystrokes. Don't use a tiling WM in VBox.