Unfortunately, that's one of the bad parts of the game, but maybe for a greater reason since Idk about coding, but I guess if the dialog rollback was on, maybe it could work in fights and even get some extra bugs out of it.
What I do is save like almost all the time; well, not much since it would make the game boring, it's mostly something to make me see rarer images or go back some decisions plus avoiding losing too much items on things that aren't needed (such like some sort of "future vision").
Ik that's straight forward cheating, but, come on(!), everyone cheats in games once in a while... back to the subject: then, if I lose a piece of dialog (especially because my mouse clicks 2x sometimes) I just go back to the latest savefile (and, unfotunately too, the autosave barely works); hope it helps!