There is apparently a multi-decade controversy about that: https://en.wikipedia.org/wiki/Capital_%E1%BA%9E https://en.wikipedia.org/wiki/Capital_%E1%BA%9E (wi

There is apparently a multi-decade controversy about that: https://en.wikipedia.org/wiki/Capital_%E1%BA%9E https://en.wikipedia.org/wiki/Capital_%E1%BA%9E (with German language authorities recently endorsing the idea that ß can have a distinctive uppercase form "ẞ")