Type the following command in the Terminal and reboot the computer
# To enable the Gesture
defaults write -g NSWindowShouldDragOnGesture -bool true
# To disable the Gesture
defaults delete -g NSWindowShouldDragOnGesture
Type the following command in the Terminal and reboot the computer
# To enable the Gesture
defaults write -g NSWindowShouldDragOnGesture -bool true
# To disable the Gesture
defaults delete -g NSWindowShouldDragOnGesture