Air Android native extensions preserve other activity to be destroyed

Hello,

I created an Air native extension on Android, I launch my other activity in the ane :

Context context = divExtContext.getActivity().getApplicationContext();  
Intent myIntent = new Intent(context, OtherActivity.class);  
myIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);  
context.startActivity(myIntent);

if my app is in background and I click on the app buton or I launch a custom URI, my activity is destroyed.

I tried to add in the app descriptor android:launchMode="singleTop" :

<android>
  <manifestAdditions>
    <![CDATA[
      <manifest>
        <uses-permission android:name="android.permission.PERMISSION_NAME" />
        <application>
          <activity android:launchMode="singleTop">
            <intent-filter>
              <action android:name="android.intent.action.MAIN"/>
              <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
          </activity>
          <activity android:name="com.nativeExtensions.OtherActivity" android:theme="@android:style/Theme.Dialog"/>
        </application>
      </manifest>
    ]]>
  </manifestAdditions>
</android>

but when my app is in background and I click on the app buton or I launch a custom URI, my activity is not destroyed but I have a black screen.

Is there a workaround ?

Thanks