Property displayHomeAsUp in menu/actionbar not working when set in alloy xml

gistfile1.txt

/*Hi, we have tested this project, and it's working.
 
 
h5. TESTING ENVIRONMENT:
 
Ti CLI 3.3.0-rc
Titanium SDK: 3.3.0.RC and 3.2.X.GA
Min SdkVersion="10", Target SdkVersion="14"
Android Device and Emulator

h5. STEPS TO TEST
 

1. Create a new alloy project.
2. Copy and paste the "index.js" code segment given below to the project "index.js" file. 
3. Copy and paste the "index.xml" code segment given below to the project "index.xml" file.
4. Copy and paste the "alloy.js" code segment given below to the project "alloy.js" file.
5. In the project tiapp.xml file replace "<android xmlns:android="http://schemas.android.com/apk/res/android"/>" with the "tiapp.xlm" code segment given below.
6. Run the project in android emulator or device.
7. Home button is showing an up arrow on it's left.
8. Click the home button to see <Alert> "Home icon clicked"
 
h5. EXPECTED RESULT
 
Home button should display and works as a one level up button

h5. STATUS

It's fully working
 
Thanks
*/

h5. TEST CODES

h4. index.js

{code}

$.tabGroup.addEventListener('open', function(e) {
    var activity = $.tabGroup.activity;
 
    if( Alloy.Globals.Android.Api >= 11 ) {
        activity.actionBar.title = "DemoApp";
        activity.actionBar.displayHomeAsUp = true; 
        activity.actionBar.onHomeIconItemSelected = function() {
            alert("Home icon clicked!");
        };  
    }
});
 
$.tabGroup.open();

{code}

h4. index.xml

{code}

   <Alloy>
        <TabGroup id="tabGroup" backgroundColor="white" >
            <Tab id="tab1" title="Tab 1" icon="KS_nav_views.png">
                <Window id="win1" title="Tab 1">
                   <Label id="label1" color="#999">I am Window 1</Label>
                </Window>
            </Tab>
            <Tab id="tab2" title="Tab 2" icon="KS_nav_views.png">
                <Window id="win2" title="Tab 2">
                    <Label id="label2" color="#999">I am Window 2</Label>
                </Window>
            </Tab>
            <!-- Use the Require tag to include external Ti.UI.Tab views -->
        </TabGroup>
    </Alloy>

{code}

h4. alloy.js

{code}

if( OS_ANDROID ) {
    Alloy.Globals.Android = { 
        "Api" : Ti.Platform.Android.API_LEVEL
    };
}

{code}

h4. tiapp.xml

{code}

<property name="ti.android.fastdev" type="bool">false</property>
<android xmlns:android="http://schemas.android.com/apk/res/android">
    <tool-api-level>14</tool-api-level>
    <manifest>
        <supports-screens android:anyDensity="false"/>
        <uses-sdk android:maxSdkVersion="17"
            android:minSdkVersion="10" android:targetSdkVersion="14"/>
    </manifest>
</android>

{code}