I agree that this is an issue that needs to be addressed sooner rather than later.
For experienced players, we know that we need to save and reload the game after getting the new planet found event. However, for newer players, they will unsuccessfully search all over for the new planet and eventually give up searching with a negative thought about the game. When they are done playing, they will save their game and exit. The next time they play, they will load the last save file and eventually stumble across the new planet. They may or may not mentally associate the new planet with the event they saw during their last session. This is not a good user experience which is why I recommend fixing it.