fix copy and delete status after copying a shape

labelme.py

@@ -230,6 +230,7 @@ class MainWindow(QMainWindow, WindowMixin):
 
     def copySelectedShape(self):
         self.addLabel(self.canvas.copySelectedShape())
+        #fix copy and delete
         self.shapeSelectionChanged(True)
 
     def highlightLabel(self, item):