From e1b4378d1c13b0287efb7f9b4f4a19cfe17ef211 Mon Sep 17 00:00:00 2001
From: Pradip Vadasak <pradipvadasak@gmail.com>
Date: Tue, 4 Jul 2017 19:11:02 +0530
Subject: [PATCH] In shadowDOM, trigger resize event manually if event is
 coming from descendent LightDOM.

---
 iron-resizable-behavior.html | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/iron-resizable-behavior.html b/iron-resizable-behavior.html
index c689363..9e49060 100644
--- a/iron-resizable-behavior.html
+++ b/iron-resizable-behavior.html
@@ -153,12 +153,13 @@
         return;
       }
 
-      // NOTE(cdata): In ShadowDOM, event retargeting makes echoing of the
-      // otherwise non-bubbling event "just work." We do it manually here for
-      // the case where Polymer is not using shadow roots for whatever reason:
-      if (!Polymer.Settings.useShadow) {
-        this._fireResize();
+      // NOTE(cdata): "Don't need to trigger event manually in case of ShadowDOM is used and
+      // event is coming from local DOM because of event retargeting. Otherwise, we need to trigger it manually".
+      if (Polymer.Settings.useShadow && event.target.domHost === this) {
+        return;
       }
+      
+      this._fireResize();
     },
 
     _fireResize: function() {