Gif not auto playing

Can no longer swipe left/right on gif images in folders and have them auto play. Looks like an update removed this feature. Can only view the animated gif, then have to back out if the image, then select next one. The new image carousel at the bottom of the screen allows swiping left and right, but the gifs do not play (not even when clicking on them). Just shows the first frame. How do I downgrade on an apple iPhone to get this feature back?