I'd like the map editor fixed.
Make or modify a system on a map by adding a small/tiny planet, no atmosphere. Now add another larger planet in the same place only with a breathable atmosphere. Now set that as Start Point 1. Save the map. Start SEIV and change the start conditions for systems to Good, 3.
Load the map and start the game. Nine times out of 10 - the tiny planet will have been converted to a breathable atmosphere planet but not be changed in size and the other, larger world will not be a starting planet at all.
Sad but true.