Problems with full screen in AR Scavenger

I have created some .gltf objects and uploaded them to AR Scavenger and they display correctly, but once I start the camera on my pc or a cell phone, when I click or select the fullscreen button, it does not stay in fullscreen, but the camera restarts again. The full screen button does not work as it should and the camera restarts, how can this problem be solved? (you can see it in the attached gif file).