Sim disappears after exploring space

After coming back from exploring space in the rocket ship my sim became invisible. This happened twice while I was playing yesterday and it seemed to be fixed by going back to space and coming back.

While my sim was invisible their body was completely gone, only the plumbing was visible. I couldn’t click on my sim in this state.

My Sim was a plant sim the second time, but I believe she was a human the first time.