Ship creation is a pain sometimes. Every time you update a ship in the designer, it defaults to type 'Escort'. And since the screen does not even mention the name of the ship you are working on (until you click save), you sometimes have multiple copies of your unique FluffyBump ship in the same fleet, some of which are capital ships, some interceptors, some assault ships and some guardians, because your memory is not perfect and you don't recall what type of ship you wanted it to be. I mean, the game does save what the ship type is in your list, right? Just get the Designer module to read the right variable name and to put it in the proper category. All fixed, with no hassle, for properly commented code.
I think the game assumes that we are too stupid to create ships and keeps adding new ones to the design list whenever we research a tech. Put a check box in the settings to TURN OFF ALL AI SHIP DESIGNS for the player who knows what he's doing. Aside from the few ships that the game gives me on startup, I never use any Ai designs. Hiding hundreds of ships behind the expander tabs in the list is just a temporary fix but those irritating things still show up in your update list and it takes forever to delete them. So please add that 'TURN OFF ALL AI SHIP DESIGNS' option in Settings and pretty please, stop changing the type of ship my upgrade yearns to be. After about 4800 game hours, I almost know what I'm doing.
Another minor bug too. Two or three updates again, all the ships in the Designer lost their detail and became sharp white blobs, impossible to see the details on the ship and equipment. I haven't tried a game without the 'Star Wars' mod so don't know if it's there with mods turned off.