In my HTML page that I am embedding a pre-generated SWF file from Flex if I set wmode to opaque in the attributes I lose the ability to use the mouse's scroll-wheel in my Flex app, but if I remove the attribute it works again. This is the case in both IE 6 and Firefox. In addition, in Firefox I also lose the ability to do reverse-tab with that attribute set.
I want to be able to use this attribute but am I seeing a bug in Flash resulting from it?