alt Hacker NewsI still have some ptsd from payment gateway integrations via iframes about 6-7 years ago. If you thought SPAs are bad by themselves for history tracking imagine those banking iframes randomly adding more entries via inside navigation/redirection that you have to track manually.
A lot can be said for just putting a "back" button a page. I still do it occasionally for this very reason. Then again, my user base for the apps I write are the most non-technical folks imaginable, so many of them have no concept of a browser back button to begin with. I am not being hyperbolic either.