Here's another one:
- start a new game
- click Done on the research screen and on the planet screen, so that you're looking at the map
- click on the Research button
- press the Esc key to call up the Options menu
- click Main Menu
- click New Game
At this point, you're looking at the map screen of your existing game. The map will not be scrollable.
- press Esc twice. You're now in the settings screen for a new game.
Weird.
I also find it very odd that nowhere in the process of starting a new game, is the player asked for any sort of confirmation. If you click on New Game instead of Continue Game in the main menu, you have no opportunity to change your mind.