Try moving the mouse to the top of the screen, when these controls should clear in a few seconds.
After which, don’t touch the mouse. And make sure nothing is jiggling it, even slightly, as this will prevent the controls from clearing.
Thanks. I did try this but with no luck, maybe I didn't wait long enough, or the mouse may have moved. I did discover if I hit F11 to put the browser in Kiosk mode it did work, so that's my go to work around. Maybe the coding for the page needs revising. I don't have this issue with other streaming services, so it's a bit disappointing.