Yeah, I see where the issue may come from. Sadly, I'm probably not going to be able to release a fix until tomorrow. If by any chance you want to continue playing, if it is what I think it is, restarting the prologue from the start is going to fix it.
Mainly, it comes from a change on the variable in charge for the mouth movement. Since your save was done when that variable hosted one single value, now that it has a list, if you load your save, it will load that variable as well, hence provoking a couple bugs. I'll do a parser code to avoid this from happening, but pretty sure restarting fixes it.
If it doesn't, please do tell me again. Thank you!