It seems that when a block falls on top of a shulker, the resulting entity has strong northward momentum. However, the same block if broken by a non-solid block usually has a weak and random such momentum.
It seems that when a block falls on top of a shulker, the resulting entity has strong northward momentum. However, the same block if broken by a non-solid block usually has a weak and random such momentum.
This also happens on my end.