diff --git a/‎src/lib/bind/accessors.html‎
Lines changed: 3 additions & 1 deletion b/‎src/lib/bind/accessors.html‎
Lines changed: 3 additions & 1 deletion
diff --git a/‎test/unit/bind-elements.html‎
Lines changed: 28 additions & 0 deletions b/‎test/unit/bind-elements.html‎
Lines changed: 28 additions & 0 deletions
diff --git a/‎test/unit/bind.html‎
Lines changed: 8 additions & 0 deletions b/‎test/unit/bind.html‎
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@@ -77,7 +77,9 @@
 
       _effectEffects: function(property, value, effects, old, fromAbove) {
         for (var i=0, l=effects.length, fx; (i<l) && (fx=effects[i]); i++) {
-          fx.fn.call(this, property, value, fx.effect, old, fromAbove);
+          // always send latest value for property
+          // if any previous effect has modified the value, given `value` will be stale
+          fx.fn.call(this, property, this[property], fx.effect, old, fromAbove);
         }
       },
 
 
@@ -713,3 +713,31 @@
     });
   </script>
 </dom-module>
+
+<dom-module id="x-propagate">
+  <script>
+  Polymer({
+    is: 'x-propagate',
+    properties: {
+      value: {
+        type: Number,
+        value: -1
+      }
+    },
+    observers: [
+      '_boundOne(value)',
+      '_boundTwo(value)'
+    ],
+    _boundOne: function(value) {
+      if (value < 0) {
+        this.value = 1;
+      }
+    },
+    _boundTwo: function(value) {
+      if (value < 0) {
+        this.value = 2;
+      }
+    }
+  });
+  </script>
+</dom-module>
@@ -1023,6 +1023,14 @@
   });
 });
 
+suite('value propagation', function() {
+  test('effects forward propagate value', function() {
+    var el = document.createElement('x-propagate');
+    document.body.appendChild(el);
+    assert.equal(el.value, 1, 'observers did not receive latest value for property');
+  });
+});
+
 </script>
 
 </body>
Original file line number	Diff line number	Diff line change
`@@ -77,7 +77,9 @@`
`77`	`77`
`78`	`78`	`_effectEffects: function(property, value, effects, old, fromAbove) {`
`79`	`79`	`for (var i=0, l=effects.length, fx; (i<l) && (fx=effects[i]); i++) {`
`80`		`- fx.fn.call(this, property, value, fx.effect, old, fromAbove);`
	`80`	`+ // always send latest value for property`
	`81`	+ // if any previous effect has modified the value, given `value` will be stale
	`82`	`+ fx.fn.call(this, property, this[property], fx.effect, old, fromAbove);`
`81`	`83`	`}`
`82`	`84`	`},`
`83`	`85`