If you are willing to add a registry entry, you can set the following:
HKEY_CURRENT_USER\Software\Wolfram Research\Mathematica DisableKeypadEnter = DWORD:1 (DWORD is the type, not part of the value)
I dont have number pad so...
I have a normal keyboard (my laptop is an HP Pavilion 11), my SO is Windows 10 and i dont have a Numpad, so i dont have an extra enter key. I've never use the sticky keys, but maybe it is acctivated so as soon as i can try out your hints i'll advice you
The enter key on the separate number pad of a keyboard works that way, the main enter key needs shift first.
