Problem with video progress indicator in Safari on iOS 8

When watching a video in Safari, the progress bar fills all the way to the end, not showing how much of the video must still load. In addition to this, when the video reaches the point to where it was downloaded, the drag button continues to move forward, and the pause button doesn't become a play button (indicating that the video has paused). When clicking the pause button, it turns to play, and when clicking play, the drag button on the progress bar then jumps back to where the video stopped. All in all very buggy, and extremely annoying, as I do not have a fast internet connection and need to rely on the progress bar to see if the video has loaded!

My question: How do I report this bug?