While saving a message after edit, I get some extra message

steps to re-produce

Create a new message
Sent to 'Indivudual members'
Edit the message, Uncheck the 'Individual Members'
Select 'Roles' and select any role from the list
Select the option to send e-mail and click the button 'Save and Send message'

In the next screen, you see a message 'The message has been saved' and above that -1

Pl see the image