Homeworld 2 Classic: Dynamic shadows on ships not working?

I’ve played and finished Homeworld 2 many times, and I have only recently started another play through on my windows 10 pc. I’ve noticed however that there are no more dynamic shadows on ships, stations or any object in space (this is for Homeworld 2 classic). This is very noticeable on mission 1. If you alt-focus on chimera station, you’ll notice that those few pylon like structures on the right, top half of the station no longer cast a long shadow across it’s body. I have tested this on multiple installs of HW2 Classic and they’re all the same. Is anyone else having this problem?

Update: The disc version of Homeworld 2 does not have this problem.