Suppose I have a person with a non-ascii name in my contacts, e.g.:
   Άλκης Γεωργόπουλος <alkisg@somewhere.com>

1) I push the [New email] button.

2) In the "To:" input box, I write
   alkisg
   A completion proposal then appears.

3) If I immediately press [Tab] or [Enter], I get:
   Άλ, κης Γεωργόπουλος <alkisg@somewhere.com>
   The problem is that extra "comma - space" in the middle of the name.

*) If I delete the text from the input box and try again, it works fine on the second time. So I guess it's a problem with an uninitialized variable.

*) If, when I see the completion proposal, I press the down arrow, select the entry from the autocompletion combo box, and press [Enter], then the problem doesn't happen. It does happen however if I press [Tab] instead of [Enter].