From 1396becfc2f19045ae88b33888f46b102b3faf2f Mon Sep 17 00:00:00 2001
From: bekzod <bekzod@me.com>
Date: Sun, 12 Nov 2017 01:32:29 +0500
Subject: [PATCH 1/2] [BUGFIX release] fix issue with unchaining ChainNodes

---
 packages/ember-metal/lib/chains.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/ember-metal/lib/chains.js b/packages/ember-metal/lib/chains.js
index fc3c4c02c6f..db34d74561f 100644
--- a/packages/ember-metal/lib/chains.js
+++ b/packages/ember-metal/lib/chains.js
@@ -209,8 +209,11 @@ class ChainNode {
   remove(path) {
     let paths = this._paths;
     if (paths === undefined) { return; }
+
     if (paths[path] > 0) {
       paths[path]--;
+    } else {
+      return;
     }
 
     let key = firstKey(path);

From 250e10a85916c10d185a1533631afca593a4ffe2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ivan=20Lu=C4=8Din?= <lucin.ivan@gmail.com>
Date: Fri, 10 Nov 2017 15:30:25 +0100
Subject: [PATCH 2/2] Add failing test for observer computed reads 2.16
 regression

---
 .../tests/system/object/computed_test.js            | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/packages/ember-runtime/tests/system/object/computed_test.js b/packages/ember-runtime/tests/system/object/computed_test.js
index 23aeead7a5d..99f8ea6d4c8 100644
--- a/packages/ember-runtime/tests/system/object/computed_test.js
+++ b/packages/ember-runtime/tests/system/object/computed_test.js
@@ -266,3 +266,16 @@ QUnit.test('Calling _super in apply outside the immediate function of a CP gette
 
   ok(emberGet(SubClass.create(), 'foo'), 'FOO', 'super value is fetched');
 });
+
+QUnit.test('observing computed.reads prop and overriding it in create() works', function() {
+  let Obj = EmberObject.extend({
+    name: computed.reads('model.name'),
+    nameDidChange: observer('name', function() {})
+  });
+
+  let obj1 = Obj.create({name: '1'});
+  let obj2 = Obj.create({name: '2'});
+
+  equal(obj1.get('name'), '1');
+  equal(obj2.get('name'), '2');
+});