Add event check before triggering zoom transition

Author: camdecoster

src/plots/geo/geo.js

@@ -486,9 +486,8 @@ proto.updateFx = function(fullLayout, geoLayout) {
         bgRect.node().onmousedown = null;
         var zoom = createGeoZoom(_this, geoLayout)
         bgRect.call(zoom);
-        // TODO: Figure out how to restrict when this transition occurs. Or is it a no-op if nothing has changed?
-        // Trigger transition to handle if minscale attribute isn't 0
-        zoom.event(bgRect)
+        // Trigger zoom transition to account for min/max scale values
+        if (geoLayout.projection.minscale > 0 && !d3.event) zoom.event(bgRect);
         bgRect.on('dblclick.zoom', zoomReset);
         if(!gd._context._scrollZoom.geo) {
             bgRect.on('wheel.zoom', null);