On the previous version of firefox for android, I could easily access my browsing history and go back, simply by holding down the back button on my phone. Now doing so does nothing, and there isn't even a previous page button on the quick menu. There's also the issue with the app always opening to a new tab whenever I start it up from shutdown, instead of going to my previously open tab. None of these problems are fixable from the laughably limited amount of settings you provide for the app.