keypad never change

[athrungithub]

In orbment x11 backend, output

keybind: released combo: <KP_Home> (null)
keybind: pressed combo: <M2-Num_Lock> (null)
keybind: released combo: <Num_Lock> (null) ------<<<< ------press BloqNum
keybind: pressed combo: <KP_Left> (null)
keybind: pressed combo: <KP_Begin> (null)

Never change to <KP_1> <KP_2> .....