Please describe the problem:
When auto-completion of email addresses is enabled, and a new email being typed starts by matching a name that can be auto-completed, and said name being properly capitalized, and the auto-completed name not being the correct email address, then when I continue to type in the address, the auto-completed name is removed, but any capitalization applied as part of the auto-complete matching remains, and the only way to fix it is *after* completing the email address to go back and change just the affected characters.

Steps to reproduce:
1. Add a contact with an email address.
2. Start a new email message.
3. Type in the first name of the contact in the "to" address in all lower case.
4. after typing the first name, type '@' and continue with a different domain name.


Actual results:
If I'm trying to type 'oded@geek.co.il', instead the "to" address now contains 'Oded@geek.co.il'

Expected results:
I would expect that when auto-complete fails, it will revert the text to exactly how it was before auto-complete started, including capitalization, so if I start by typing 'oded', and then continue to type '@geek.co.il', then the result would be 'oded@geek.co.il'.

Does this happen every time?
Yes

Other information: