Reported by @digitala11y at ableplayer/ableplayer-wordpress#8

Here is the demo video link,
https://www.digitala11y.com/academy/able-player-video-on-wordpress-demo/
The full screen button is read as button by screen reader, there seem to be no programmatic label for the element.

The reported problem is a lack of announced label on the button; the button also appears to be wrapped with an inaccurate aria-label with the text 'Preferences'.