When editing a recipient address, typing any character, even [Del] moves the cursor to the end of the address.
Steps to Reproduce:
1. Open any message to reply or create a new message
2. Try to edit any recipient address
With each character typed, even [Del] the cursor moves to the end of the address.
Cursor should move according to the action performed, addition or deletion.
This has been happening for a couple releases.
*** This bug has been marked as a duplicate of bug 314010 ***