I have implement the FB Customer Chat on a website and working ok. The issue i am having is that there is no obvious way to close the dialog (i.e having an (x) button) if the user does not need the chat dialog.
The problem only applies to desktop. In mobile the dialog has the x (close) button as it should. What am i missing?
This is how it looks on deskop without the close button.

If your visitor to your site using a desktop, clicks on the FB widget the chat box will disappear.