Special characters in general

I realise there will most likely be a number of similar posts regarding this, but it really would be extremely nice if you could use special characters - it would make it so much easier for users with an other native language than English.
Just today I was creating a custom workout and in my description I can’t use common Danish letters - it simply just leaves them out. To avoid this I usually write my descriptions in English, but to be honest, I would much rather have a fix for this issue.

Did not find that this was an issue until today, as though it was only apple emoji that I couldn’t see. But as I couldn’t see it how would I know.

However, my Hud only displayed Jrn instead of Jörn. This needs to be fixed as incorrectly identifying a noun / pronoun, can lead to offence and can be a life-changing offense in today’s small world social media society.