Hi,
1. If you delete (in game, via obsolete / delete in designer) the core designs for colony ship and/or constructor and then pick up the first tier ideology trait that should spawn either a colony ship or 3 constructors, these do not spawn. I have tried this on a few different games.
* I would like to ask for the possibility of restoring obsolete designs in game.
2. If you use the intuitive trait, which i do, and save the game on the first turn before researching any techs you will not receive the bonus upon reload. I usually start a few games, save the starts I like and then pick one up - this does not work with the intuitive trait at all because of said bug.