Help tracking down rare case of corruption on save
Saved files become corrupted on opening. "Open anyway" doesn't work. All the files are saved and closed during the previous session without any message like "File cannot be saved properly" or "Can't save the file", however, when you open them on the next day, they are corrupt and unopenable. Here is one file that became corrupt and I am afraid is lost for good:
EDIT [of 2023.04.05]: As the discussion here and on GitHub (here: https://github.com/musescore/MuseScore/issues/17057) has shown, files most likely get corrupted on save, not on opening.