...shoot. Well, at least it won't completely halt progression.
With the Damon fight, it looks like I accidentally left the "Cancel" option on Choice #2, which is "Fight (Skip Cutscene)", rather than "Not yet..." like it often is. Oooooops. That'll be fixed next update as well. In the meantime, you'll have to manually scroll to "Not yet..." in that dialog box. Come to think of it, I should add "Skip Pre-Battle Cutscene" to some other bosses at some point.
Thanks for catching all these issues! I'll have them fixed the next time there's an update (or another major bugfix... let's hope the latter doesn't happen)