Single Line Return vs. Double Line Return
Shift + Enter = Single Line return in Internet Explorer®
We're working on getting the returns to 'behave' properly in Internet Exlorer as the current default 'Return' is a double line return. In order to get a single line return, hold down your Shift key and then press your Enter key.
Firefox - a great alternative browser
With the Firefox browser, the returns are behaving themselves as the default return is a single line return - as you would expect. You can download Firefox
free of charge to check it out yourself.