Thanks for sharing.  We'll look into it.

While doing some brute force testing on this (cheating up 100 colony ships and sending them out into the night), I did notice one very odd thing.  The planetary event that can add a tile to a planet (Swamped) will NOT add that tile to a planet until either the initial planetary info screen is closed or something is done to the planet (a building ordered or a project started).  Then that tile will suddenly pop up on the screen.

This makes me think there is some sort of buffer not clearing/executing or something like that and whatever is supposed to happen isn't actually happening until something ELSE happens to the planet, either by way of building something or clicking the info screen away and then clicking on it again to bring it back up.