Multi-textured OBJ/mesh colour issues

[RootPC]

So, in Multi-textured OBJ'S with separate meshes for each texture, when you convert to voxels, it seems that Studio will randomly bleed textures onto different areas.

[WizardCM]

Just to make it clearer, the particular model shown above has exactly 2 textures/materials/colours. They are on separate pieces that have no relation to each other (they are separate objects & are not touching each other).

For some reason, random individual pixels have the colour from the other part of the model.

[Sphax]

I understand the issue. I don't know (yet) what is the cause however.