I am also having this problem. Have 6.2.2 and, like the others, works fine in landscape but portrait mode has any writing showing about an inch to the left. I’m using the original 12.9” IPAD Pro. You Should be able to see this in the attached. The first line was written in Landscape. I switched to portrait and started writing under the ‘L” in landscape but you can see it is offset to the left. The numbers were done the same and you can see that the offset is consistent. .