I'm not really sure how to describe this one issue that I had, and it hasn't happened since... I had a couple browser windows open, before one of them crashed. The other one worked fine so I continued to browse there. Then, when I finished browsing and closed it, there was another window that had been hidden below that that was showing the contents of the first page that had crashed, except without any of the browser options (menus, buttons, etc) and didn't have a task switcher entry either. Its almost like the page viewing process got separated from the actual browser core, or something like that.

I haven't filed it to Bugzilla because I'm not entirely sure what happened and it hasn't happened since, though if it does, I'll definitely do that.

Honestly having multiple browser windows open right now seems to be a recipe for disaster. I've also seen the whole losing focus thing when in a second window of the browser.... as in I'd click a link to open in a new window, go back to the first window to put a new address in, and in the middle of doing that, lose focus to the second window, and when I went back to the first window, the address bar had disappeared, until I went to the second window and back again, then it came back.