I have the file version, and I've had a full love bar and had the nurse outfit, saved him every time, and it still shows the fun thing in the gallery locked. is this a visual bug or did I do something wrong? (This was during the lover slut ending. also sup.)
Can you elaborate more? Did you put the nurse outfit on? Then you should be able to play the Fun scene which should make the lock go away. Albeit there are no images yet for it, so clicking on it would lead you nowhere.