In IE, any element with a CSS style 'position' attribute will show up through the ModalPopupExtender when it is active. This does not occur in Firefox. This is now fixed for IE8. However it is still an issue in IE7, and we do not have a fix for this.
Comments: This ticket was filed for a pre-15.1 version of AJAX Control Toolkit. If this is still an issue in v15.1 or later, please create a new inquiry.
Comments: This ticket was filed for a pre-15.1 version of AJAX Control Toolkit. If this is still an issue in v15.1 or later, please create a new inquiry.