This is an archived snapshot of W3C's public bugzilla bug tracker, decommissioned in April 2019. Please see the home page for more details.
It seems that the spec disagrees with browsers for the markup "<select><script>". Browsers insert (and execute) the script. See discussion at http://krijnhoetmer.nl/irc-logs/whatwg/20081111#l-203
Looks like this is fixed in the spec now.