User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0 (Beta/Release) Build ID: 20130829135643 Steps to reproduce: 1. Enable type=number input html5 form element with dom.experimental_forms 2. Enable "Search for text when I start typing" in Options -> Advanced -> General 3. Go to http://www.w3schools.com/html/tryit.asp?filename=tryhtml5_input_type_number 4. Try typing in the input box Actual results: Focus is shifted to the search box (input type=number is not considered an input field). It's impossible to type anything in the input field. Expected results: Focus should remain on the input field, like it does when type=number is disabled.
I think it's a duplicate of bug 791653. But this one gives a better explanation of what happens: "Focus is shifted to the search box (input type=number is not considered an input field)".