Kerbal Space Program

In the given example, I was planning to do an ejection burn to get to Eve. I focussed on Eve to see where the periapsis falls and opened the maneuver node to fine tune it. When the cursor is off the orbit drifts. When the cursor is on, the orbit change stops. It is impossible to change the planned maneuver node because of false readings. It affects the game half the time you plan maneuvers and causes a crash into planets. The second image shows that there was a Mun capture burn planned, but by the time the craft arrived, the trajectory changed with a periapsis under the surface instead of about 10km above it.