Hi,
Witch Doctor is listed as an evil role.
However it cannot be excluded from "Neutral Evil" and I think "Neutral Evil" will never spawn a WD (I've emulated a lot of game with high spawn chances of WD).
If you exclude everything from "Neutral Evil" (not WD, cause you cannot exclude it), you will never spawn a WD, you will get the error 002 invalid role list.
However the spawn percentage of WD seems to take some space in the "Neutral Evil".
Is it normal ? (WD is a unique role)
I think not if the card role states it's an evil.
MaTxX