User Agent: Mozilla/5.0 (Windows NT 6.0; rv:34.0) Gecko/20100101 Firefox/34.0 Build ID: 20141126041045 Steps to reproduce: - thunderbird v31.3.0 - compose new mail - in the field "to", type 1-3 letters, wait for autocompletion with 3 names in list - select WITH THE MOUSE the second name -> the second name appears as receipient - press enter -> the name changes to the first in the list, the mail will go to the first Actual results: the name changes to the first in the list, not the selected name Expected results: expected is that the selected name is used and that pressing "enter" does not chnage the name