Noisereduction edit getting lost

On the ipad app, my settings for noisereduction disappears from my images as sson as i switch to nest image or whatever, when i go back to the image, the correct number of noise reduction is shown in the sidebar but its missing from the actual image, if i touch the bar for noisereduction in anyway or just set it once again to the same value the noisereduction appers again in the image but will disappear again as soon as i switch to next image