New Line Behavior — We've modified how lines appear when they are connecting to shapes to more appropriately show their actual endpoints at the center of the shape, as well as making the Curvy line type much more attractive visually and adding much more powerful control handles for the Orthogonal line type.
If you would like to enable the new line behavior works, paste the following in Terminal:
"defaults write com.omnigroup.OmniGrafflePro UseOldBezierPathLayout NO" (if you are running OmniGraffle Professional, minus the quotes)
"defaults write com.omnigroup.OmniGraffle UseOldBezierPathLayout NO" (if you are running the Standard version of OmniGraffle, minus the quotes)
"defaults write com.omnigroup.OmniGrafflePro.MacAppStore UseOldBezierPathLayout NO" (if you are running OmniGraffle Professional purchased in the Mac App Store, minus the quotes)
"defaults write com.omnigroup.OmniGraffle.MacAppStore UseOldBezierPathLayout NO" (if you are running the Standard version of OmniGraffle purchased in the Mac App Store, minus the quotes)