>>> Maybe your single page app is different, but the ones that I know break most of my browser’s features, such as the back and forward buttons, page refresh, b

>>> Maybe your single page app is different, but the ones that I know break most of my browser’s features, such as the back and forward buttons, page refresh, bookmarking, sending a link, or opening a link in a new window or tab All these concerns assume HTML 5 history api doesn't exist. It does and SPAs can do all that.