If you experience issues with some Windows stylus pens not writing, please modify the corresponding pen settings:

Go to [System Settings] -> [Bluetooth & devices] -> [Pen & Windows Ink] -> [Pen settings]

1. Uncheck the [Allow me to use my pen as a mouse] option (essential)
2. Uncheck the [Show cursor] option (recommended)
3. Check the [Ignore touch input when I'm using my pen] option (recommended)