I just received my S10 ultra book cover keyboard and I see that quite a lot of keys for special characters are mis programmed. For example the @ character and # character do not work with the intended keys and I have to press other keys to get these. Seems some sort of error.
Have you removed the key cover from the tablet and placed it back on? With my S9+, it would sometimes get confused and that would resolve the issue. Also, do you have more than 1 language set up? I found sometimes I would accidently hit the language key while typing and the mapping for some of the keys would change.
There is also the possibility that you may just have a faulty keyboard cover.
