Possible race condition on page navigation

Moving from one page to another quickly may result in loading the wrong page, making it look like the last navigation event (the last click) didn't go through.

To reproduce, go to https://dockyard.com/ click on Book Meeting and then Culture repeatedly once it fails to load the page you actually clicked.

No file, test, or entry point is named. Start by reproducing the issue at dockyard.com with the Book Meeting and Culture links clicked repeatedly, then trace the page-navigation handling to identify which request wins. Done means rapid navigation consistently displays the page for the latest click.

Written by the indexing model from the issue text.