get_all_solutions is buggy?

[kmohanram]

import numpy as np
import exact_cover as ec
from exact_cover.io import DTYPE_FOR_ARRAY
data = np.array([[0,0,1],[0,1,0],[1,0,1],[0,0,1],[0,0,1],[1,0,1],[0,1,0],[0,0,1],[0,1,1],[1,0,0]], dtype=DTYPE_FOR_ARRAY)
print(ec.get_exact_cover(data))

This simple example above does not include the solution (9,1,0) and incorrectly includes (9,1) ... can someone kindly look into this? Thank you.