That's so strange, do you mind emailing me your log files? I can't replicate the bug on my machine. You can find them here:
Windows: %APPDATA%\Godot\app_userdata\StimuWrite\logs\
macOS: ~/Library/Application Support/Godot/app_userdata/StimuWrite/logs/
Linux: ~/.local/share/godot/app_userdata/StimuWrite/logs
My email is stimuwrite@eveharms.com