Fix vertex duplication
@ -440,7 +440,7 @@ class MeshConverter(_MeshManager):
# Convert to per-material indices
for j, vertex in enumerate(tessface.vertices):
uvws = tuple([uvw[j] for uvw in tessface_uvws])
uvws = tuple([tuple(uvw[j]) for uvw in tessface_uvws])
# Calculate vertex colors.
if mat2span_LUT: