--- a/client/src/components/staging/StagingDetail.vue	Thu Dec 20 13:45:32 2018 +0100
+++ b/client/src/components/staging/StagingDetail.vue	Thu Dec 20 14:18:30 2018 +0100
@@ -149,6 +149,7 @@
 import { WFS } from "ol/format.js";
 import { or as orFilter, equalTo as equalToFilter } from "ol/format/filter.js";
 import { displayError } from "@/lib/errors.js";
+import center from "@turf/center";
 
 export default {
   name: "stagingdetail",
@@ -234,15 +235,7 @@
       return item.status === STATES.APPROVED;
     },
     moveToBottleneck(index) {
-      const props = this.bottlenecks[index].properties;
-      console.assert(props, "no props found!"); //inserted during bug hunt
-      const { bbox } = props;
-      console.assert(bbox, "no bbox found"); //inserted during bug hunt
-      const [lat1, long1, lat2, long2] = bbox;
-      const coordinates = [
-        lat1 + (lat2 - lat1) / 2,
-        long1 + (long2 - long1) / 2
-      ];
+      const { coordinates } = center(this.bottlenecks[index]).geometry;
       this.moveMap(coordinates);
     },
     moveMap(coordinates) {