Shadow now initializes zorder behind argument patch

clintval · clintval · commit 0ce9525cb9bb · 2017-10-16T09:50:53.000-07:00
diff --git a/lib/matplotlib/patches.py b/lib/matplotlib/patches.py
@@ -621,6 +621,10 @@ def __init__(self, patch, ox, oy, props=None, **kwargs):
 
     def _update(self):
         self.update_from(self.patch)
+
+        # Place the shadow patch directly behind the inherited patch.
+        self.set_zorder(np.nextafter(self.patch.zorder, -np.inf))
+
         if self.props is not None:
             self.update(self.props)
         else:
