EU 8bit UTF-8 caracters always ? in RMS Expr

For a period it was possible sending from one RMS Express to another getting the EU umlauts correct, not now. They seem stripped to  question mark ?

In subject field some problems has been seen from time to time.

In the text body 8bit "ascii" has earlier been allowed from webmails  using UTF-8. Even if looking bad in RMS Expres the bits where there and became readable again when message was forwarded to another web mail.

Any plan for enabling UTF-8 in and out of RMS Express?