I am trying to input Korean character in the syntax editor but only blank spaces appears. Is there any special attribute that has to be set to enable Asian language based input?
I don't believe WPF controls can natively support IME without some additional WinAPI calls. I believe the WPF TextBox and related controls do these additional API calls needed to support input.
IME support is something that is on our TODO list but we haven't had a chance to dig into it yet.