matplotlib
diff --git a/‎lib/matplotlib/backends/backend_macosx.py
Copy file name to clipboardExpand all lines: lib/matplotlib/backends/backend_macosx.py
+2Lines changed: 2 additions & 0 deletions b/‎lib/matplotlib/backends/backend_macosx.py
Copy file name to clipboardExpand all lines: lib/matplotlib/backends/backend_macosx.py
+2Lines changed: 2 additions & 0 deletions
@@ -179,6 +179,8 @@ def start_main_loop(cls):
             _macosx.show()
 
     def show(self):
+        if self.canvas.figure.stale:
+            self.canvas.draw_idle()
         if not self._shown:
             self._show()
             self._shown = True