Do you have your images to be set as "always on top"? It could be something on your test pages is over-riding this because it is set for "always on top" also. I have only ever randomized one test and I did not have any issues with the headers, etc. not showing up. Mine were all set at test level and inherited just as you described.Does it do this on more than one computer when you test it in browser mode? I would try that to see if it could just be some internet setting on your computer that is messed up when you randomize the test. I usually try it on several folks systems when I have a strange error like you describe occur to rule out my computer's settings. Try that and see what happens.
