Camera Raw crop my raw files, help!

Good morning, I have a problem with Camera Raw. When opening .ORF files, the edges of the images are cropped, both horizontally and vertically: so, part of the photo is lost! I checked the Camera Raw cutter and it is set to maximum. My camera is an OM System OM 1 Mark II. The image format is 4/3. The inconvenience is definitely unpleasant, I don't know how to remove the malfunction that does not allow Camera Raw to correctly manage the images from my camera. Can somebody help me? Thank you