I played DDLC several times trying to run all glitches in the game and recently could see the last one missing
It happened while I was reading Natsuki's manga on the first day of poem-sharing from second act (although it should happen at other times too, but surely, every time I played and nothing hapenned, I can consider it quite rare). I needed to close the game for a moment and when I returned, the game opened on the "END" screen, followed by this:
I couldn't interact with anything on the screen, I tried it myself; a quick restart of the game and things went back to normal (except Sayori's broken image. The "ghostmenu" audio was also being reproduced)