Next to the "tiny preview rectangle," there's a gray arrow indicator that suggests swiping right. If you do that, you'll find a button you can tap for the old f

Next to the "tiny preview rectangle," there's a gray arrow indicator that suggests swiping right. If you do that, you'll find a button you can tap for the old functionality. So now it's tap-swipe-tap instead of just tap, but in exchange the old functionality of sending an existing photo has changed from a long series of actions to just tap-tap-send.