^^^ that's the normal thread preview box. What OS, Cat?
And what is the error message when using the back key?
If it only happens when hitting the back button, then I am not to worried about it. The back button often caches the pages, which seems like what is happening here. If you refresh the page, I imagine those popups go away?
Ahhhh ... good thought. I've had that happen before in other ways. Apple "efficiency" is sometimes kinda' goofy ... when going back, it's grabbing the last cached page.If it only happens when hitting the back button, then I am not to worried about it. The back button often caches the pages, which seems like what is happening here. If you refresh the page, I imagine those popups go away?
If I hit the back arrow a couple of times to get back to the main forums page, the boxes go away. If you want to stay in individual forums and look at different topics is when the boxes don't go away.
Instead of using the back button, try using the breadcrumb links at the top of the page. It gives you a refreshed page when going back a forum level.
^^^ the bread crumbs, Cat.
The same as refresh, which is the F5 key. Hitting F5 reloads the page you're on, clicking on the Website Issues breadcrumb does the same.