I don’t know about that ChatGPT answer; it may have produced inaccuracies from the question itself, as 22.04 refers to the Ubunto version that Mint is based off of.
As for the probem itself though, have you tried this solution:
The registry keys are located here:
HKEY_CURRENT_USER\SOFTWARE\LiteratureAndLatte\ScrivenerQt6
To perform a full reset of settings, delete that group. You can back it up first via the File menu, with Export.