Walk the artist tree when preparing for saving with tight bbox.

anntzer · anntzer · commit 7961de383f7f · 2019-05-14T12:41:54.000+02:00
diff --git a/lib/matplotlib/backend_bases.py b/lib/matplotlib/backend_bases.py
@@ -2067,6 +2067,7 @@ def print_figure(self, filename, dpi=None, facecolor=None, edgecolor=None,
                         self.figure,
                         functools.partial(
                             print_method, dpi=dpi, orientation=orientation))
+                    self.figure.draw(renderer)
                     bbox_artists = kwargs.pop("bbox_extra_artists", None)
                     bbox_inches = self.figure.get_tightbbox(renderer,
                             bbox_extra_artists=bbox_artists)
