Mac Photos face circle consistently in wrong place
I have an odd but reproducible problem with the face circles in Mac Photos. First of all, this problem only occurs with the oldest photos in my collection - the newer ones are fine. These old photos were not taken with my iPhone - but then I have other pictures in my collection that were not taken with my iPhone, and these are fine.
With these old photos, when I go to view/show face names, the face circles appear on the photo - but they are all a bit too low and to the left. They are correctly positioned relative to each other, though it's as if they've all been moved down the photo a bit. If I go to edit and then just click done, they move to their correct positions. If I then cycle forward/back in the photos a few times, they return to the previous (wrong) positions.
I've tried restarting the app, and restarting my Mac, but this problem appears consistently. Any help much appreciated!
MacBook Pro 14″