I have a single SPA deployed in my life. About 5-6 years ago. I did nothing to preserve the history, it was just working back then. Imagine how more polished are things now. I am thinking that people who are breaking the history should take special steps to do so, otherwise it will just work out of the box with most frameworks/libs.
Sometimes the requirements are shit and so are the results. Like asking a instant redirect on invalid page and thus break the back button completely after submit any form. And yet you still get requirements like this.
