shield tiles block movement again. I've decided that not blocking your airlocks with shields is simply an engineering consideration that the player needs to make when designing ships. The alternative absolutely breaks crew pathfinding.
fixed a blueprint for missile tubes that unlocked a broken item
removed the module ownership test when removing shield pixels in singleplayer design. Warning: this means you can delete shield pixels even if you don't have the ability to put them back.
fixed a bug where system slots would retain the icon from previous bridge setups
fixed a bug where right clicking a crystal branch to view its contents can result in the item being removed