You previously fixed the 2nd boss in 0.8.45 and again in 0.8.46.2. Were those different problems each time, or the same problem that was being misfixed?
Viewing post in Secret Care Cafe 0.8.47 - Release notes comments
The boss is having some weird bugs and issues, even now I have one person reported that can't start it on new version for some reason (I got the save from the player, I need to check it later today). I have no idea why this started to happen and I'm trying to work around it. If this continues I will have to make some events repeat for everyone with a save, to make sure nobody missed it, but I would like to avoid that if possible. Sorry for the issue with it.