Allow the player preview to update while being seeked/dragged [delivers #74952388]

Do we really need these mouse over/out 'mousemove' toggles?

 Look at line on 1207. Seems like removing the listener on hide tool tip might be the real culprit. 

```
        function _hideTimeTooltip() {
            window.removeEventListener('mousemove', _sliderMouseEvent);
```