  The Classical Nucleation Theory allegedly fails to describe the temperature
dependence of the homogeneous crystal nucleation rates below the temperature of
maximum nucleation, $T_{\mathrm{max}}$. Possible explanations for this
suspected breakdown have been advanced in the literature. However, the simplest
hypothesis has never been tested, that it is a byproduct of nucleation datasets
that have not reached the steady-state regime. In this work, we tested this
possibility by analyzing published nucleation data for oxide supercooled
liquids, using only nucleation and viscosity data measured in samples of the
same glass batch that also have satisfied a steady-state regime test.
Furthermore, all the uncertainty and regression confidence bands were computed
and considered. Having this rigorous protocol, among the 6 datasets analyzed,
we only found weak evidence supporting the existence of the nucleation break in
2 datasets. Our collective results thus indicate that the break at
$T_{\mathrm{max}}$ is not a common feature of all glass-formers.
