The button just to the right of where you enter the URL is now 'multi-purpose'.
When you type anything into the address field, it's a green arrow, which you can click on the access the URL you've entered.
While the page is loading, it become the red 'Stop' button, to terminate loading.
Once a page has loaded it becomes a white button (with a grey, circular arrowhead), which performs the 'Refresh' function.
Chris