  In this work, we generalize the results obtained in (J. Geom. Anal.,
32(6):Paper No.173, 32, 2022), presenting some examples of $CD(0,N)$ spaces
having different dimensions in different regions, deducing in particular that
the topological splitting may fail in $CD(0,N)$ spaces. We also observe that
any reasonable non-branching condition may fail in $CD(0,N)$ spaces and that
the existence of an optimal transport map, between two absolutely continuous
marginals, is not guaranteed by the $CD(0,N)$ condition, without requiring a
non-branching assumption. Moreover, we show that the strict $CD(0,N)$ condition
is strictly stronger than the classical $CD(0,N)$ one and it is not stable with
respect to the measured Gromov-Hausdorff convergence.
