That's been the case for, well more years than I have been playing the game, and that's a long time, didn't realise that's what you were commenting on. There are weird entries, I have come across quite a few myself, they haven't been fixed and probably won't be because while we players find a few odd things, with 400b stars and most of the galaxy unexplored there are probably tens of thousands or even millions of examples that players have not yet come across and that would take a long time and a lot of dev time and effort to go through. They will probably never be fixed, the others I have come across haven't been.