I just noticed this today while doing a fresh play through of the game myself. I had just found lifepod 7 and the "odd statue" in it reminded me of the septic tank. But when I went to check my blueprints it wasn't among them. Is this a fixable glit…
Thanks 0x6A7232, your suggestion helped me solve the problem. Aaaaaaaand showed what a big dummy I am. *facepalms* You see... the three knocks against the hull followed by a pause... that I could only hear near the cockpit of the ship... Well, it …