Fix collapse of layer nodes after double click

Author: wonder-sk

src/app/qgisapp.cpp

@@ -9449,7 +9449,7 @@ void QgisApp::showLayerProperties( QgsMapLayer *ml )
     else
     {
       rlp = new QgsRasterLayerProperties( ml, mMapCanvas, this );
-      connect( rlp, SIGNAL( refreshLegend( QString, bool ) ), mLayerTreeView, SLOT( refreshLayerSymbology( QString ) ) );
+      // handled by rendererChanged() connect( rlp, SIGNAL( refreshLegend( QString, bool ) ), mLayerTreeView, SLOT( refreshLayerSymbology( QString ) ) );
     }
 
     rlp->exec();
@@ -9467,7 +9467,7 @@ void QgisApp::showLayerProperties( QgsMapLayer *ml )
     else
     {
       vlp = new QgsVectorLayerProperties( vlayer, this );
-      connect( vlp, SIGNAL( refreshLegend( QString ) ), mLayerTreeView, SLOT( refreshLayerSymbology( QString ) ) );
+      // handled by rendererChanged() connect( vlp, SIGNAL( refreshLegend( QString ) ), mLayerTreeView, SLOT( refreshLayerSymbology( QString ) ) );
     }
 
     if ( vlp->exec() )

src/gui/layertree/qgslayertreeview.cpp

@@ -18,6 +18,7 @@ QgsLayerTreeView::QgsLayerTreeView(QWidget *parent)
   setAcceptDrops(true);
   setDropIndicatorShown(true);
   setEditTriggers(EditKeyPressed | SelectedClicked);
+  setExpandsOnDoubleClick(false); // normally used for other actions
 
   setSelectionMode(ExtendedSelection);