Example url: https://codepen.io/wojciechczechowski/pen/jOvEXGP Steps to reproduce the problem: 1. Open the link above 2. Click "Open fullscreen" button to call webkitRequestFullscreen() method on the image 3. Exit fullscreen mode with Escape key Expected behaviour: Image smoothly goes back to it's original position Actual behaviour: Image goes to it's original position, but there's a strange zoom-in glitch at the end of the transition. Additional notes: Seems to happen only when the image originally (before / after entering fullscreen) spans outside the viewport. On images, that fits to viewport it doesn't happen.