copy and paste issue

Hi,
Copy and paste into the comment box does not seem to work correctly, meaning the comment box does not automatically expand to encompass the comment.  After you paste into the box you need to then hit one of the arrow keys on the keyboard to get the comment box to expand to the size of the text.  In addition, in the Firefox browser at least, if the pasted comment is long enough, the comment box does not expand correctly and there is always one or two lines cut off at either the top or the bottom.  Can you please take a look?
Regards,