Lightroom Classic displayed magenta rectangle on image in develop module after upgrade to version 8.4. This then disappeared but now there is a magenta fringe around certain parts of the image. It goes away when zoomed to 100%. Tried disabling video GPU no help. Tried rolling back to previous 8.3 version, no help. What can be done? Shown on neck of zebra. I have screenshot of the magenta rectangle too but only one image uploaded.