```python import msprime import tskit import numpy as np print(tskit.__version__) # 0.6.5.dev0 ts = msprime.sim_ancestry(10, recombination_rate=1e-8, sequence_length=1e6, population_size=1e4) for centre in [True, False]: grm0 = ts.genetic_relatedness_vector(np.eye(ts.num_samples), mode='branch', span_normalise=True, centre=centre) grm1 = ts.genetic_relatedness_vector(np.eye(ts.num_samples), mode='branch', span_normalise=False, centre=centre) np.testing.assert_allclose(grm0, grm1) ``` and based on the scaling, what comes out is not span normalised