When running the cloud push demo on the showcase on an iOS device, once you receive a native cloud push notification the demo always displays the "Enable Cloud Push" button, even immediately after clicking it.

To reproduce:

1. Use icefaces-showcase.icesoft.org (this has native notifications working)
2. Navigate to the Cloud Push demo on a mobile device
3. Click EnableCloud Push button
4. Click Disconnect Push button
5. Click Priority Push button
6. Wait for the native notification to arrive. When it does, click it to navigate back to the demo in the browser.
7. See that the Enable Cloud Push button is rendered again (incorrectly).
8. Click Enable Cloud Push button. (see that when it returns to the browser the Enable Cloud Push button is still rendered).
9. At this point, if you touch the browser in the white-space beside the Enable Cloud Push button, the correct buttons will display (or if you close the browser tab and re-open and start from scratch)