When an url label is the url itself, editing it in word causes for the webpage address to be changed

Steps to follow to reproduce:

• Create a new page and save it
• In the browser click on "Link" -> "Web Page"
• Type http:www.yahoo.com in the webpage address field and the same value in the label field
• Save the page
• Open the document in Word and delete a letter from the label (e.g. an "o")
• Click "Publish document"
• Open the document in the browser again

Result: The new link points to http:www.yaho.com