ui: stop old graph animation before starting new one

src/app/qt/view/QtGraphView.cpp

@@ -113,6 +113,8 @@ void QtGraphView::finishedTransition()
 	view->setInteractive(true);
 
 	switchToNewGraphData();
+
+	m_transition.reset();
 }
 
 void QtGraphView::switchToNewGraphData()
@@ -170,6 +172,12 @@ void QtGraphView::doRebuildGraph(
 	const std::vector<DummyNode>& nodes,
 	const std::vector<DummyEdge>& edges
 ){
+	if (m_transition)
+	{
+		m_transition->stop();
+		switchToNewGraphData();
+	}
+
 	QGraphicsView* view = getView();
 
 	m_nodes.clear();

src/lib/component/controller/GraphLayouter.cpp

@@ -66,9 +66,9 @@ void GraphLayouter::layoutSimpleRing(std::vector<DummyNode>& nodes)
 
 void GraphLayouter::layoutSpectralPrototype(std::vector<DummyNode>& nodes, const std::vector<DummyEdge>& edges)
 {
-	if(nodes.size() < 2)
+	if (nodes.size() < 2)
 	{
-		LOG_WARNING("Not enough nodes for layouting");
+		LOG_INFO("Not enough nodes for layouting");
 		return;
 	}