In a scene where he and Jigen are spying on Lupin incapacitating Marciano's men, Goemon's fundoshi disappears between shots.
The English dub shows Lupin mistakenly thinking Rosetta had died, even though she was audibly snoring when she was lying there, passed out from whiskey.
When Lupin sees Rosetta, he thinks she's a ghost. Part 2 Episode 113 shows he doesn't believe in ghosts, no matter how much his friends try to prove it.