Only been playing the update for a short minute, but here's what I've found so far
1: Centaur Cowgirl Scene is not unlocking after viewing it.
2: Always uses chastity version, regardless of actual chastity.
3: Probably not a bug, but the unicorn also has the dialog prompt for the Cowgirl Scene, but doesn't have a picture for it, and doesn't even use the normal one.
4: Maybe a bug(?) and an older one at that, but the centaur oral scene has an unused chastity sprite I believe, be neat if that was fixed but if it was intentionally scrapped it's fine.
5: Not even a bug, just a suggestion. Dullahan Anal X-ray someday? Don't think I forgot what you took from us!