Poor Dark Horse Translation?

I know how completely unlikely it is that Dark Horse messed up their translation, but I was reading through Volume 39, and I came across something that's just baffling. This is a panel from Episode 347.

There at the bottom, where Puck says "He's trying to speak as properly as he can at this point"...I assume that's supposed to be a footnote that just got thrown in as dialogue?
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