The guided demo picks up where Back left it

When you stepped back through the guided demo with the browser’s Back button and then followed a link off the script, the walk’s bar named a later step and Next skipped ahead from there. A reload of the same page would have picked up from the step you stepped back to. The bar and Next now pick up from that step too.

The walk also changes step only once the step’s page has loaded, so the bar no longer shows the next stage while the previous page is still on screen.