User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:22.214.171.124) Gecko/20100914 Firefox/3.6.10 (.NET CLR 3.5.30729) Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:126.96.36.199) Gecko/20100915 Thunderbird/3.1.4 By default, there are 4 lines in the "To" field in the "Write" window. You can make it have more than 4 lines by clicking and dragging down, but you cannot make it have fewer lines. Apparently 4 is the minimum. On my netbook, screen space is at a premium, so it would be nice to be able to have LESS than 4 lines in the "To" field. Here is a picture: http://img441.imageshack.us/img441/9160/composee.png Reproducible: Always Steps to Reproduce: 1. In the main window, click "Write" 2. In the "Write" window, take note of how many lines are in the "To" field. 3. Notice that you can have more than 4 lines by clicking and dragging, but not fewer. Actual Results: Cannot have fewer than 4 lines in "To" field when writing a message. Expected Results: Should be able to resize down to 1 line as a minimum, and if you add more contacts to send to, the number of lines should increase dynamically (one at a time).