This is in the standard blogger and draft-version. And it's really annoying. I hope it get fixed quickly, since it applies to Chrome and Firefox the same. So currently there is no way to change the HTML code of the templates.
You can join the discussion to draw attention in the Google Support Forum, and hope that the supports read it :).
Update 02/26/2011: Looks like to be resolved. At least here the buttons can be used as normal. Pfew!