When watching live BBC TV channel streams, if you have used the zoom function of your browser to zoom out, then some of the transport controls may have disappeared from the bottom of the Embedded Media Player window. This is a known bug and will be rectified in an upcoming release.
Meanwhile, to bring back the transport controls, you'll need to reset the browser's Zoom settings to 100%. This can be done either through your browser's settings or simply:
Hold Ctrl + 0
Mac users can hold the Command key + 0