The content doesn't show when hitting the back `button` of my browser

Below is my router.js and this is the example of url www.myUrl/slugName and the page itself show all the content and data I need. But when I go to www.myUrl/slugName/cities/1/areas and hit the back button of my browser, the content of www.myUrl/slugName doesn’t show. Does anyone had the same experience on why the content of my www.myUrl/slugName doesn’t show. Is there something wrong on my router.js? Also, when I refresh the page the expected content is shown.