I installed this game using the itch.io app and it installed the Neon 1.3.1 version... however when I hit launch MS Windows (10) says I need to download an app from the Microsoft Store to use the "itch-cave" link but the window is greyed out and the game is frozen in the background on a white screen in a window... I can confirm everything seems to work if I browse to the install directory and run it from there but that kinda' defeats the purpose of the all in one handy itch.io app! ;)
Thank you for what seems so far an interesting game :)
P.S. Yes, working around the problem as above does indeed break saves for me...