better

Fltk/onelabWindow.cpp

@@ -958,8 +958,6 @@ void onelabWindow::rebuildTree()
     free(_treeStrings[i]);
   _treeStrings.clear();
 
-  FlGui::check(); // necessary e.g. on windows to avoid "ghosting"
-
   std::vector<onelab::number> numbers;
   onelab::server::instance()->get(numbers);
   for(unsigned int i = 0; i < numbers.size(); i++){
@@ -1064,6 +1062,8 @@ void onelabWindow::rebuildTree()
 
   _tree->redraw();
 
+  FlGui::check(); // necessary e.g. on windows to avoid "ghosting"
+
   FL_NORMAL_SIZE += _deltaFontSize;
 }