FIX: Make sure the macosx backend updates the canvas when shown

greglucas · greglucas · commit fce4431e365d · 2021-11-30T17:01:53.000-07:00
Force a draw_idle() call on the macosx backend when a show() is
called to update the canvas.
diff --git a/lib/matplotlib/backends/backend_macosx.py b/lib/matplotlib/backends/backend_macosx.py
@@ -91,6 +91,12 @@ def __init__(self, canvas, num):
             self.show()
             self.canvas.draw_idle()
 
+    def show(self):
+        # docstring inherited
+        if self.canvas.figure.stale:
+            self.canvas.draw_idle()
+        super().show()
+
     def close(self):
         Gcf.destroy(self)
 
