I've had a couple of interesting issues, maybe because of my method of directly copying and pasting save files from old gens to new versions since .13.
First, I've never been able to enter the mermaid kingdom. The entrance is simply not there, a sheer wall at the bottom of the whirlpool just as it was before they were implemented. I don't have any ideas for this one and honestly kinda bummed I can't interact with the whole race.
Secondly, for a long time now, Ghost Princess has a long memory, since no matter how early I raise her, she always considers me as having taken too long and I can't interact with her at all. Managed to complete her awakening in two/three days, and she still refuses to interact further. Planning on attempting to override this with Dog Princess attacks forcing her to gift me her veil, and next run using the veil on Ghost Princess to force her into the party. Hopefully it will work.
Any feedback or ideas appreciated. Heck, even questions.