OAuth Flow in webOS App

I am trying to implement an OAuth flow for Tumblr in my webOS app, but I am at a loss for how to get back to my app after authenticating. I am able to connect to my server and make the request, see the Tumblr auth login page and it directs back and I see the thank you message from my server, so everything is configured correctly on that end. But in my webOS app, the window closes and my app is no longer visible (it does not crash or close, just is not visible). Anyone have any direction on this?

In webOS TV apps, webview and multi-window features are not supported. So there is no way to return to the app. If you want to use OAuth in your app, please use login for devices as follows: