Bug w/ 'Lock/Unlock Device' shortcut function

The 'Lock/Unlock Device' shortcut function does not work properly. I set START+DOWN to the 'Lock/Unlock Device' function. However, when pressing the shortcut keys, it sometimes unlocks the device when it is already unlocked (sometimes is properly locks the device).

Additionally, holding down on any key unlocks the device when it is locked. On the Instinct 2 Solar I have, you have the press the shortcut key combination (START+DOWN in this case) again to unlock it. That is preferable so that the device is not inadvertently unlocked when wearing gloves or bending your wrist.