Merge pull request #1976 from tschaub/pointerup-return

Required return from event handler.

src/ol/interaction/modifyinteraction.js

@@ -481,6 +481,7 @@ ol.interaction.Modify.prototype.handlePointerUp = function(evt) {
     this.rBush_.update(ol.extent.boundingExtent(segmentData.segment),
         segmentData);
   }
+  return false;
 };