I wouldn't actually know what document to upload to reproduce this, as it's doing it with all my documents now. Even if I go back to the original point where it started, the voice is doing all of it now. Ugh. And I think the male voice also seems to be using inflection. Although it's hard to say as I don't commonly use that one.
I'm a book writer, and I have noticed in the past, in one or two other documents, maybe if I'm using funny writing, like to invent words for a fictitious language, it will switch to something non-standard for that line. I could probably excuse this for the spelling of those words, but here it started out with normal English, moving from a paragraph where someone enters a room and following with some simple dialog.
Could it be a memory glitch? This one document is especially large, and I sometimes experience a bit of lag in the read aloud feature keeping up the highlighted text if it's processing something in the background. Maybe something happened back there that caused it to load an alternate language pattern for some reason? The problem is, I'm unsure if such a thing should even exist under these conditions, if it only has the one to work with.
I also occasionally have issues where it finishes a line, then pauses and repeats some portion of a previous line.