Cannot get any static mesh to to rotate in blueprint

So, I’ve made a sun. It’s about the size of the standard sphere scaled to 1000. The material is dynamic in the sense that is has a panner. I’ve tried a number of different methods to get the mesh to rotate in the bp but nothing is working. That includes using a rotator component in the bp, using a timeline, setting actor rotation, setting world rotation, setting relative rotation and changing the material. The mesh is set as movable in the bp. I’m at a loss here…

Never mind, I’m an idiot. I pressed play, it works fine. I don’t know why I was expecting it to rotate in the viewport without playing the level.