Does anyone know what these lines are on this photo? These lines don’t appear on the photos on the phone itself and are not apparent when viewed in the Photos app on the Mac. However if I export photos or drag them to the desktop from the Photos app on my iMac, many photos will exhibit these lines. If I export them from my iPhone to Day One, for example, there are no lines but if I do the same from the Mac, then this corruption is often evident.
I have only been aware of this for a few weeks and wondered if it might be Mojave related but I cannot be sure exactly when it started and can see no other mention of this problem elsewhere in connection with Mojave so that is probably unlikely.
Thanks
David