Restore lib tree refreshing, but don't attempt to refresh tree root.

common/lib_tree_model_adapter.cpp

@@ -394,10 +394,11 @@ void LIB_TREE_MODEL_ADAPTER::RefreshTree( LIB_TREE_NODE* aNode )
     for( auto const& child: aNode->m_Children )
     {
         if( child->m_Score > 0 )
+        {
             RefreshTree( child.get() );
+            ItemChanged( ToItem( aNode ) );
+        }
     }
-
-    ItemChanged( ToItem( aNode ) );
 }
 
 

common/widgets/lib_tree.cpp

@@ -216,14 +216,7 @@ void LIB_TREE::Regenerate( bool aKeepState )
 
 void LIB_TREE::RefreshLibTree()
 {
-    // m_adapter->RefreshTree() does not work fine on Windows.
-    // It creates a lot of wxWidgets alerts.
-    // calling Refresh of the wxPanel is enough
-#ifdef _WINDOWS_
-    Refresh();
-#else
     m_adapter->RefreshTree();
-#endif
 }