I'm seeing strange behavior when I click on a post, then click the "back button" in my browser. Sometimes if I'm on the "subscribed" tab, click on an article, then press back, it seems to show me "all" or "local" posts. Sometimes it shows me a different list if I'm on the "all" tab, click on a post, then press back. Same behavior on Firefox mobile and desktop version.

Haven't went into in-depth testing, but I can't be the only one seeing this right?

Guessing it's something to do with browser, CDN, or server-side cache?