Awesome, thanks for the report. I had someone report that before and couldn't reproduce. Looks like I should have tested in base Firefox, not just Firefox Developer Edition :)

I also can't scroll at all in Chrome on Windows. If it helps, when I mouse over one of the underlined words like "developer" then the outside border goes orange and strangely enough I can scroll a bit.

Same thing happens in Chrome for OS X.

I'm using Firefox on windows with the same issue.

Yup - also Firefox user (Windows) and cannot scroll.

Chrome on Ubuntu does not work also.