Same problem here, all my VR movies, including my fav, Galapagos, are all squished down to a 4:3 aspect ratio regardless what the original was with no apparent way to fix it. Everything worked great up to that last update. I'm using an HTC Vive Pro with a 1080TI on a Ryzen7 3800X. Going to have to stop recommending this software until the issue is resolved :-(