User Agent: Mozilla/5.0 (Windows NT 5.1; rv:21.0) Gecko/20130213 Firefox/21.0 Build ID: 20130213040206 Steps to reproduce: 1. I opened firefox nightly 21.0a1 (2013-02-13, nightly-elm) by -metrodesktop on Windows XP 2. Go to "http://roricon.egloos.com/" by any method. (I used typed address bar and enter) 3. Click to Input method (right side on page) , and type something. Actual results: Page scrolled down every press key. Expected results: nothing happened, and I write typing any problem.

This bug effected to not only "roricon.egloos.com" , but any longer (more than page) site. for example, this bug report page is effected. Upper input method is not effected (search in this page) but lower method is effected (Additionam comments, URL...)

Thanks for the bug report! It looks like the same issue was reported by another user in bug 842162; please follow that bug for more details.