Using IE8, click on any filter to go to the Filters page. Click on top-right Create Issue. Part of the screen will be greyed out, and the UI for entering the new issue is shown.

However, the text box that one can use to enter/modify the filter is still shown, and hides part of the UI. See attached screen shot.

(v5.2.7#850-sha1:b2af0c8)