The whole area is congested. At moons, there is no energy to take space so numbers are fine. We will think of a good enough solution and apply it in the next few hours.
Eventually, we improved the area management as best as possible. Please have a look now and tell us if it works better for you now.
Eventually, we might need to either limit the displayed planet name there or display numbers in bulk for energy power (ie instead of 345.056/346.00, we could use 345k/346k)