How to save a picture from gmail?

In the Mail app (I havn't got a Gmail account, though it shouldn't make any difference), if I press and hold a picture for a couple of seconds or so then I get the option to 'save image' - it should then go into your Camera Roll or Saved Photos album in the Photos app

THis does not seem to work anymore. Any work around?

It still works for me in the Mail app. What happens when you press and hold the image, do you not get a popup after a couple of seconds e.g.