Fleet not staying in orbit

My fleet refuses to stay in orbit around Earth. Each time, I give it the order “Earth: Move to Location” and it moves there, and says it’s in orbit, but during the construction phase Earth moves and the fleet doesn’t. I noticed that “Minimum Distance” field, which shows up for other fleets when I give them a Move to Location order, doesn’t show up for this fleet when I select it and give it that order. Maybe that’s related?

Looks like if I toggle “Order Filtering” check box, the minimum distance field comes back, and now it stays in orbit. Very strange, still a bug.