Yes, the crow stopped before the sentence ended, it stayed like that for a moment (I assume it was the time that the rest would have been typed out, or it was giving me time to read) before going to the next bit of information. I didn't press anything, buttons or mouse, while the crow was talking, so I know that it definitely isn't me — my character was stood still and I was focused on what was being said.
For my other playthroughs I cannot confirm nor deny that my button pressing is causing the crow to skip parts of their dialogue, but it doesn't seem to be on particular messages as I've seen it happen with different ones almost each time (when I'm paying attention, that is, as I'm farming while the crow talks).