Disables conncet on drag by default

src/editor/js/components/editor.tsx

@@ -63,7 +63,7 @@ export class Editor extends React.PureComponent<propTypes, stateTypes> {
         this.state = {
             graph: undefined,
             visibleLabels: true,
-            connectOnDrag: true,
+            connectOnDrag: false,
             selectedNode: undefined,
             keys: {},
         };