Using Google Nav Bar doesn't always run On Page Load

When viewing the first page in my app (page A), then selecting and viewing another page (page B) with the Google Nav Bar, then selecting that first page again (page A) with the Google Nav Bar, the On Page Load for the first page does not fire.

If I then select and view a different other page (page C) with the Google Nav Bar, and come back to the first page (page A - still using the Google Nav Bar), then the On Page Load for the first page fires.

Is there anything I can do to ensure that the first page always gets On Page Load on selecting it with the Google Nav Bar?

Thanks in advance for your consideration.

EDIT: On Page Load is fireing and executing completely. It's the refresh of the ListView on the page that isn't happening. If I go to another page and come back with the nav bar, the ListView does not show changes until I manually trigger the ListView refresh by navigating away, and then navigating back.