> And things like the "back button" keep acting weird

Ah, good, so it's not just me, then. It's become unpredictable how many steps the back button will take you on GitHub. Or sometimes it'll just take you to a broken, perpetually-loading page. These used to be solved problems on the web.

It breaks so often in SPAs. Turns out that making the client-side code responsible for routing leads to a ton of fragility.