Do you mean the buttons that said quicklook and save? There are hidden by default, but can be seen if you click on the blue word 'details' on the top right of the message. Once selected, this view remains for all other messages.
You should still be able to quicklook attachments from the message by selecting them and pressing the spacebar. If this doesn't work for you, then maybe there is another problem. The quicklook window is now a pale colour by the way.