Issues with Sky Sphere

Hey there! I’m working on getting an alpha ready for my first level, and am having issues with the sky sphere and light source.

I’m trying to set my sky sphere so that the game takes place during dusk, but whenever I try to change sun’s position (whether via the details panel or the blueprint editor), it doesn’t update in my game.

I’ve made sure to set my light source as movable, that the sky sphere is correctly pointing to the light source, and I’ve also tried fiddling around with settings to get it to work. Does anybody know a solution?