TileMap occluder blocking normal map behavior?

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:bust_in_silhouette: Asked By ResoluteGryphon

I have a tile with a normal map and a occlusion region set up in a TileMap. My Light2D casts shadows based on the occlusion but the texture doesn’t respond like it should having a normal map. I think the occluder is blocking the light from reaching the tile. What can I do to have the best of both worlds? I’d like to keep everything self contained; I don’t want to create duplicate “occlusion” tiles or anything like that. Is there some checkbox I’m missing?