Fix changing layout

src/components/Graph.jsx

@@ -277,7 +277,9 @@ export default class GraphContainer extends Component {
 
     relayout() {
         closeTooltip();
+        this.clearScale();
         sigma.layouts.stopForceLink();
+
         if (appStore.dagre) {
             sigma.layouts.dagre.start(this.state.sigmaInstance);
         } else {

src/index.js

@@ -312,6 +312,7 @@ if (!existsSync(imagepath)){
 global.closeTooltip = function(){
     if (appStore.currentTooltip !== null){
         appStore.currentTooltip.close();
+        appStore.currentTooltip = null;
     }
 }