Hi @camperos, welcome to the forum.
It’s obviously a bug.
My workaround is
If (key != '') msg += key;
What are you planning. If it is an edit box you are better of with an android java edit box. For instance If you want to use a back space you can do so by keeping track of the textWidth of each character and blank it out with a rect. There are other problems making it difficult. If you want a code for an android java edit box I can post it. Just let me know.
Edit: In code above the “notdef” character is not printed.