When defining a question in a survey from the front-end using Firefox 20, there is a problem with the page selector pulldown. I have chosen "If user select an answer/column", selected my answer, and then clicked "Skip to Page". When I try to select a page to skip to, the select box won't open when clicked. It seems to work fine in IE8.

This happens in the back-end as well so it doesn't appear to be a conflict with my template.