Issue with Browser and VR Mode

We've found that when we launch a View intent with a WebXR link from a third party application, the Oculus Browser doesn't always show VR Mode as an available option. This is true for Youtube, as well as products like 3D Vista. 

Is this a known issue? Is there some other setting, or recent update, that has made it more difficult for third party apps to launch the browser and keep VR mode as an option?