New habitable planet event - does not update map with new icon for habitable planet.

I have notice that the map does not get updated when you get the "New habitable planet" survey event.

In fact, I used to completely overlook this previously when it occured.

However, I have noticed that if you save the game and then reload, the map tends to get updated with correct icons.

I have seen this happen several times where I would say - "I didn't realize I could colonize that planet" ???