When you compose a message the signature shows correctly but on the receiving end it might show double spaced. This is because the ENTER key is interpreted differently between composing the message and actually showing the message in HTML.
With HTML there are different tags for creating a new line or a paragraph (the double spaced line). When you press ENTER the HTML editor will create a new paragraph. To create a new line you must press SHIFT + ENTER.
|Key Combination||In HTML Code|
|New Line||SHIFT + ENTER||<br>|
|New Paragraph||ENTER||<p> </p>|