Quick question about "Dexter's Chalk"

[joethelion]

So earlier today, I was listening to the "Drift album version" of 'Dexter's Chalk' ...

And maybe it's because I usually listen to the EP version, but I just now noticed a weird difference between the tracks, and I'm wondering why the change:

On the EP there's the bit where the vocal sounds something like "a tissue, a tissue, we all fall down" [right at the two minute mark]

But on Drift, the word "tissue" is muted... which sounds really weird.

"a ______, a ______, we all fall down"

Does anyone know what's up with that?