I don't think it's a bug, but I'm mentioning it just in case. When you unlock all the encyclopedia entries with the NPC, the notifications to unlock new entries can be a bit annoying, as they pop up every second for about a minute.
Hey Juridk! Thank you so much for the bug reports so far. I'm away at the moment, but it won't take long to fix some of the things you've found.
In regards to Part 2, I was thinking of doing it as a standalone, but offer a version that also contains just Part 2. Still thinking on it.
Thanks again, I'll get back to it soon.

In Cynthia and Tulle's new relationship mission, the enemies aren't hostile and you have to talk to them to start combat; I don't think that's intentional, so keep that in mind.