From 0ce9525cb9bb3314319084c5a61e79c3d798dc7d Mon Sep 17 00:00:00 2001
From: clintval <valentine.clint@gmail.com>
Date: Mon, 16 Oct 2017 09:50:53 -0700
Subject: [PATCH] Shadow now initializes zorder behind argument patch

---
 lib/matplotlib/patches.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/matplotlib/patches.py b/lib/matplotlib/patches.py
index 96a9b8bd1ddb..c765522d5eb8 100644
--- 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: