[tomtomtom777]

Nitpick: Please don't break the back button.

[breakfastduck]

Works fine for me - what behavior are you seeing?

You need to click it twice but that's because the page is doing a redirect it seems. That would be the expected behavior from my POV.

[tomtomtom777]

That is not expected behavior. If you click a link and get a page, one expects back to return to the previous page.

A standard HTTP redirect does this right as well as location.replace()

The site incorrectly sets a new location by other means.