Photos on iPhone not saving all edits
iphone 6s on iOS 11.3.
Most of the time after I take a photo, I’ll edit the levels etc, crop, possibly add a filter. Recently the Photo app seems to have developed a bit of a glitch where these edits aren’t permanently saved.
It is rather frustrating to have spent time going through dozens of photos, getting them to a point you’re happy with only to go back to the photo later and find it’s reverted back to the original.
Anyone experienced this or have any suggestions as to a fix?
iMac, OS X Mountain Lion (10.8.2)