Lightroom mobile selective edits not applied for specific image

Hi

When im applying a selective edit in light room mobile for example adjusting the exposure on an eye, the adjustment is not being applied to the image, but the changes i.e. the diamond is displayed along with the settings.

im am seeing this behaviour on Ipad and on an Iphone 10, the behaviour appears to be only happening on a particular image.

Thoughts?

{Moved from Lightroom Desktop to Lightroom Mobile forum by Moderator}

Thanks

Luke