Perhaps urgent bug report:
I get a new player ID every time I boot up the game. Personal Best is also not stored between sessions. Using the Linux v1.1.0 version. If I were to keep playing, the leaderboard would get flooded with different c2019 entries.
Update:
Looking at the files in the PlayerPrefs directory
~/.config/unity3d/CROW'S NEST/CRIMSON FANTASIA
it seems like they were last modified several days ago, when I played the old version. I don't find any saved files that would have been created by the new version in any other sensible location, nor does the new version appear to find these older saved files?