Was researching techs in the defense tree. All techs concerning hitpoints and armor have been researched before, and I went to the last tech on the list regarding defensive boni. Watched my tactical structures out of interest while researching, the only reason it came to my attention. I researched the fortification upgrade that grants 30% extra hitpoints and 2 additional armor points to all tactical strutures and noticed that the bonus was applied to the gun platform, but not to any of the other structures (hangar bays, repair platforms, etc...). The gun platform recieved both boni, the other structures didn't recieve either (example: Hangar bay had 5200 HP and 14 armor before and after, Gun platform had 3899 and 18 before, 4800 and 20 after).
I haven't found this in the known issues topic, so I was wondering whether this was an old problem or if this is intended (in which case the infocard belonging to the research needs correction) or if I just missed something while playing.
Experimenting around I also found that you can build the foundry awfully close to your planet or asteroid (incase of an asteroid it even clips into the... asteroid). Maybe an invisible extension to the structure that forces the player to keep some additional distance?