fix copy here , to make copied shape is the only selected one

canvas.py

@@ -137,6 +137,8 @@ class Canvas(QWidget):
             self.shapes.append(shape)
             self.selectedShape.selected = False
             self.selectedShape = shape
+            self.repaint()
+
         else:
             shape.label = self.selectedShape.label
             self.deleteSelected()