If the ß character is a forbidden character then the Chromium-family behaviour is correct. If its a legal character then the Firefox and Safari behaviour is cor

If the ß character is a forbidden character then the Chromium-family behaviour is correct. If its a legal character then the Firefox and Safari behaviour is correct. If it is a forbidden character then registrars will not allow you to register xn--meagefactory-m9a.ca, and thus the problem will never exist.