MediaSession.setPositionState() not showing the audio time, also seekbar not showing as expected.

const audio= document.querySelector('audio');

function updatePositionState() {
  if ('setPositionState' in navigator.mediaSession) {
    navigator.mediaSession.setPositionState({
      duration: audio.duration,
      playbackRate: audio.playbackRate,
      position: audio.currentTime,
    });
  }
}

await audio.play();
updatePositionState();

navigator.mediaSession.setActionHandler('seekto', (details) => {
  updatePositionState();
});