Don't auto expand contact information when hovering over a contact in To/CC
When replying, the "To" field populates exactly over where the previous "reply" button was. Hovering over the contact in the "To" field causes it to expand automatically with contact information. This expansion covers the message text field. This is an inconvenience as it requires moving the mouse after clicking "reply" instead of instantly being able to type into the message field. Well, you can type, you just can't see it. Perhaps move the buttons/fields so that there isn't an automatic expansion when the new message window opens, or require a right click to expand contact information.