In my site, the back button takes you to the app you were at BEFORE you went to meta64. If you want to call that a problem fine. Most SPAs abhor the back button, don't want it, don't need it, etc. There is a reason native apps don't use the 'back' feature, but simply have 'cancel' buttons to get out of things etc. The fact that the back button is such a thorn in the side of non-spa apps is a good hint that non-spa apps are not ideal, unless browsing static documents.

BTW even hacker news has a 'back functionality' that sucks. You have to go back then refresh. Meta64 is already vastly superior to other online social media experiences including wikipedia and including better than this HN site.