This does work, but it's still broken for me for leah, who somehow got 'egg induction' in the blessings list after i did the breeding chambers corruption achievement.
Edit: Actually, it seems like Leah's bathing suit costume sprite is broken too. At least it is in the Mac version.
It would be a mac in my case but unlikely, as when I emulated the previous version on it the hot-spring trick worked for Leah too. Might try a fresh download to see if it's just on my end, but I'm not getting actual errors so the game is probably just not properly setting the correct flag when changing costumes.
Wait. You're talking about the spring in the fairy forest right? Of that's the case, then people have reported that one. My issue was that there are specific dialog from the last update that never showed up in this update, as I thought it was glitch. The previous dialog from the last game made it immersive in my personal opinion, or the choice of having different dialog coming from different characters; instead of ignoring the obvious. I found that very interesting, which is why I like the series.