The update introduced, and set as default, a version 2 lens correction profile for the Canon RF24-240 lens which causes the Raw image to display incorrectly by showing an area outside that of the matching camera Jpeg which is blurred and distorted (I have only found this for images shot at zooms of 38mm upwards). This region can of course be cropped out as it is not part of the intended image. Reversion to the previous profile removes the problem.