queue redraw when exiting line/circle mode

SketchWidget.py

@@ -353,8 +353,10 @@ class SketchWidget:
         if mode != self.mode:
             if self.mode == 'line':
                 self.drawingLine = None
+                self.queue_redraw()
             elif self.mode == 'circle':
                 self.drawingCircle = None
+                self.queue_redraw()
             self.mode = mode
 
     def do_line_left_click(self, x, y):