Are you having issues with iMessages constantly displaying 1 unread message on the dock badge?
Well … yes this is beta software so first of all not everything is going to work right away.
But there is a fix and thanks to good folks at MacRumors.com this little annoyance of a “bug” can be killed off. How you may ask? Well look below and you ‘ll find out.
Open Terminal and enter the following text just copy and paste. (without the “”).
type “killall Dock”
You’ll notice that your dock will close and re-open. This should fix the problem
the Command “killall Dock” ends the computer process that runs the Dock, and then restarts the Dock process, which only serves to display the dock. None of the running programs are affected.