Chrome Version 55.0.2883.87 m (64-bit)
Edge 38.14393.0.0
Firefox 51.0.1 (32-bit)
Win10 x64
Also just tested on my surface book on all three same browsers
Same result.
Just a note that it only does it on back if the previous page was just a forum category not a thread. And it seems to be doing it sometimes actually. It does it 100% when choosing forum from the link up top https://i.imgur.com/9KLjvTK.png and I’m in a thread.
Gonna bump Discourse’s version tonight, which might fix it. Let’s see. If not, I’ll have to dig deeper into what Ember’s up to that’s not working… sigh