diff --git a/frameworks/projects/mx/tests/mx/controls/Tree_FLEX_18746_Tests.as b/frameworks/projects/mx/tests/mx/controls/Tree_FLEX_18746_Tests.as
new file mode 100644
index 0000000..5d64b06
--- /dev/null
+++ b/frameworks/projects/mx/tests/mx/controls/Tree_FLEX_18746_Tests.as
@@ -0,0 +1,112 @@
+package mx.controls {
+    import flash.events.Event;
+    import flash.events.EventDispatcher;
+
+    import mx.collections.ArrayCollection;
+    import mx.core.mx_internal;
+
+    import org.flexunit.assertThat;
+    import org.flexunit.async.Async;
+    import org.fluint.uiImpersonation.UIImpersonator;
+
+    use namespace mx_internal;
+
+    public class Tree_FLEX_18746_Tests
+    {
+        private static var noEnterFramesToWait:int = NaN;
+        private static const _finishNotifier:EventDispatcher = new EventDispatcher();
+
+        private static var _sut:Tree;
+        private static var child:Object = {label: "Item"};
+        private static var parent0:Object = {label: "Folder 0", children: new ArrayCollection()};
+        private static var parent1:Object = {label: "Folder 1", children: new ArrayCollection([child])};
+
+
+        [Before]
+        public function setUp():void
+        {
+            _sut = new Tree();
+            _sut.width = 200;
+            _sut.height = 200;
+            UIImpersonator.addChild(_sut);
+        }
+
+        [After]
+        public function tearDown():void
+        {
+            UIImpersonator.removeAllChildren();
+            _sut = null;
+        }
+
+
+        //--------------------------------------------------------------------------
+        //
+        //  Test method
+        //
+        //--------------------------------------------------------------------------
+
+        [Test(async, timeout=1000)]
+        public function test_object_removed_from_stage_via_code_is_not_initialized():void
+        {
+            //given
+            const dataProvider:ArrayCollection = new ArrayCollection();
+            dataProvider.addItem(parent0);
+            dataProvider.addItem(parent1);
+
+            //when
+            _sut.dataProvider = dataProvider;
+
+            //then wait a few frames
+            noEnterFramesToWait = 2;
+            UIImpersonator.testDisplay.addEventListener(Event.ENTER_FRAME, onEnterFrame);
+            Async.handleEvent(this, _finishNotifier, Event.COMPLETE, then_expand_second_folder, 200);
+        }
+
+
+        private function then_expand_second_folder(event:Event, passThroughData:Object):void
+        {
+            //when
+            _sut.expandItem(parent1, true, true, true);
+
+            //then wait a bit
+            noEnterFramesToWait = 5;
+            UIImpersonator.testDisplay.addEventListener(Event.ENTER_FRAME, onEnterFrame);
+            Async.handleEvent(this, _finishNotifier, Event.COMPLETE, then_move_child_to_first_parent_and_expand_it, 500);
+        }
+
+        private function then_move_child_to_first_parent_and_expand_it(event:Event, passThroughData:Object):void
+        {
+            //then
+            assertThat(_sut.isItemOpen(parent1));
+
+            //when
+            ArrayCollection(parent1.children).removeItemAt(0);
+            _sut.expandItem(parent0, true, true, true);
+            ArrayCollection(parent0.children).addItem(child);
+
+            //then wait a bit
+            noEnterFramesToWait = 1;
+            UIImpersonator.testDisplay.addEventListener(Event.ENTER_FRAME, onEnterFrame);
+            Async.handleEvent(this, _finishNotifier, Event.COMPLETE, then_contract_second_folder, 200);
+        }
+
+        private static function then_contract_second_folder(event:Event, passThroughData:Object):void
+        {
+            //when
+            _sut.expandItem(parent1, false, true, true);
+
+            //then no error was thrown
+            assertThat(true);
+        }
+
+
+        private static function onEnterFrame(event:Event):void
+        {
+            if(!--noEnterFramesToWait)
+            {
+                UIImpersonator.testDisplay.removeEventListener(Event.ENTER_FRAME, onEnterFrame);
+                _finishNotifier.dispatchEvent(new Event(Event.COMPLETE));
+            }
+        }
+    }
+}
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