Bug in caches_action?

Has anyone actually seen a before filter being called once an action is cached with caches_action? When I try to use caches action, the before filter is called only if the action hasn't already been cached. In other words, caches_action functions much like caches_page. Here is some test code that shows the problem:

class TestCaseController < ApplicationController   caches_action :show   before_filter :my_filter

  def my_filter     logger.info('%%% hi')   end

  def show     render(:text=>'hello from show')   end

end

If you put this into your controllers directory, start your server in production mode, and go to http://localhost:3000/test_case/show, then you will see the "hi" message in the log. However, if you hit reload, the "hi" message does not appear a second time. Am I doing something wrong?

Thanks,   --Paul