Well, while I'm sure it's frustrating for you, I'm happy to confirm I found no bugs, and the proper solution (which involves the cancel mechanic) works exactly how it's supposed to.
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There are also other ways to get through the conversation by selecting choices that obviously contradict reality if you're trying to rush through and keep skipping past the choice you can cancel. I tested all of that, too, just to be on the safe side. Not a single bug in sight, and I found zero issues with your save.
Again, I'm sure it's frustrating on your end, but the maze is built to keep you lost in it for as long as possible. From the physically impossible and difficult to navigate space, to presenting a bunch of lewds, to giving you a chest that will only ever give you Nothing, to telling you what you want to hear, or even outright lying to you, all that struggle means it's doing what it's supposed to do.
The idea behind clearing it is to go against that grain. Don't just mindlessly bone everything. Ignore the chest. Don't believe what the maze is telling you. That's also the point of the cancel mechanic/wild card choice. You're presented with options A, B, C, and D, and you choose E (or Num0, as the case may be).
Or brute-force it and get the trophy, but that is the more difficult option.
Well, looks like the main part of the problem is that I never put in an option to switch to the default vest costume if you don't have one of the Freeze costumes unlocked. Fixed that for v0.20.
It also looks like there's a bug with the dresses where they appear whether you have the trophy to unlock them or not. Also fixed for v0.20.
And I did go and double check to confirm; going back to the Wickham Estate, choosing Jenny, then Sneak In, then talking to her in the receiving tower and selecting Get Out will fix the Homing Stone bug for you.
My changelog says that was fixed for v0.18, so there shouldn't be any differences between my dev version and the public version as far as that goes.