Network: Resize network zone.

src/View/Network/GraphWidget.py

@@ -475,7 +475,7 @@ class GraphWidget(QGraphicsView):
     def setup_scene(self, min_size, max_size, size):
         scene = QGraphicsScene(self)
         scene.setItemIndexMethod(QGraphicsScene.NoIndex)
-        scene.setSceneRect(0, 0, 2000, 2000)
+        scene.setSceneRect(0, 0, 6000, 6000)
 
         self.setScene(scene)
         self.setCacheMode(QGraphicsView.CacheBackground)