Flash of unstyled content (FOUC) in Firefox only? Is FF slow renderer?

Question

I\'m not seeing this issue in any other browser that I\'ve tested - IE, Chrome, Opera - but whenever I load a page from the server, I\'m seeing a flash of unstyled content befor

Answer 1

I was experiencing this error. A colleague has said that it's caused by the attribute, autofocus being added to a form field.

By removing this attribute and using JavaScript to set the focus the brief flash of unstyled content stops happening.