Problem: 

If you increase the planet magnification beyond 1x, the satellites start disappearing. To reproduce (1) turn on satellites with names, (2) go to planet magnification and start sliding the control to the right. By the time you reach 7x virtually all of them will be gone.

Answer: 

This is working as designed.  As you increase the magnification, the satellites are effectively inside the Earth and thus disappear.

Increasing the magnification really does change the effective radius of the planet.