Projector replication causing file size issues
Step 1- You design a ship and then like most people do, blueprint the ship "blueprint 1" and place it into the projector so you can repair it
Step 2- Blueprint the ship again, with the projector projecting the ship so it saves "blueprint 2".
Step 3- If you then head into the projector and add that blueprint "blueprint 2" into the projector the ships file size and supposed block count gets larger.
Step 4- Continue this process until the file size becomes unbearable and causes a lot of lag when copying or blueprinting.
Not so much a bug but more an unfortunate mechanic that makes updating projectors less intuitive.