fix issue with polygon sliding in from offscreen
fix issue with polygon sliding in from offscreen

adampax/titanium-mapbox,titanium-forks/adampax.titanium-mapbox,adampax/titanium-mapbox,titanium-forks/adampax.titanium-mapbox,adampax/titanium-mapbox,titanium-forks/adampax.titanium-mapbox,adampax/titanium-mapbox,titanium-forks/adampax.titanium-mapbox,titanium-forks/adampax.titanium-mapbox,titanium-forks/adampax.titanium-mapbox,adampax/titanium-mapbox,adampax/titanium-mapbox