I'm not sure this is working correctly. I put on a helm with darkvision with my goblin and the lighting changed. Other times I've noticed it being pitch black and I couldn't see, though ideally I'd have the purplish hue that comes with darkvision.

I can't see how Darkvision wouldn't work. IIRC, it's applied to the skin as well, so it should always be active. However, the effect is completely cancelled by a real light source (ambient and dynamic) -- were you near a such when the you noticed the supposed bug?

I just tested this with a goblin, a dwarf and a human in the Narrow Tunnels. The dwarf has the darkvision, I think: the tunnel is brighter and somewhat purplish-tinted. The human and goblin have a darker tunnel.

I just tested this. It cost the life of my goblin to do so. But the death was not in vain!

Goblins -have- dark vision

I went to an area with -0- light, and could still see.

Thanks Ebok, you totally got my back bro.