I'm sure this has been reported already, but I'll make it a short one.
When I colonize a new planet, I lose all possible sight of it. It just disappears from the main screen (no screen shots, I'll grab a few when I can). However, when I save, then load up the file, the planet graphics return. It's a little.. unsettling, to say the least. Does make it hard to tell where said planet is. However, once the planet builds a ship, you can easily click on it from there (the little shield to denote an orbiting spaceship pops up).
Oh, and when traveling through a wormhole anomoly, my sensor range stays in the same spot as if the ship was still there, lasting forever.