Found 3 issues:
1) Scenes for the gallery aren't unlocking despite fulfilling the requirements. I loaded with save from 0.23 with the current 0.27 update (if that makes sense to you) in free loam (without starting any new events) since that's when the issue started. Loaded a save from 0.20 since I was hoping the issue would be fixed but nope.
But despite the scenes not unlocking from the save files, they're already unlocked when going back to the main menu and viewing the gallery from there.
2) Missing the fairy event. I did start on this event but I decided to start over from the last event in 0.20 cause of the gallery issue. The event never popped up in my save.
3) Unable to relearn Titus Exposus from Henry after using the Book of Boredom for that skill.