One of the differences in the mono version of this song -- by The Beatles on the Revolver album -- is it's longer.
It's a little jarring, in that the place where we're used to hearing it fade out, it continues on and sounds like it skips. I'm hoping that's the way it's supposed to be.
Maybe that's why it was faded out earlier on the more common stereo version. There's around 10 seconds difference between stereo and mono.