What is the correct format/shape of the initial values for Sequential Monte Carlo (SMC)?

Questions v5
2

For some reason, if we replace

init_smc = {"coefficient0_log__": np.full((num_draws, num_chains), 10),
            "coefficient1_log__": np.full((num_draws, num_chains), 10)}

with randomized initial values

init_smc = {"coefficient0_log__": np.random.normal(size=(num_draws, num_chains)),
            "coefficient1_log__": np.random.normal(size=(num_draws, num_chains))}

the warning is suppressed, even though the shape of the numpy arrays inside init_smc remains the same.