sorry been away for a while, but experienced a weird issue with my 5D4 and had to send it away, gone for a whole month, basically with more shooting i noticed the outer af points consistently front focuses compared to centre point with all my L's (24-70II, 70-200II, 100L and 16-35f4L IS)

Canon ended up having to test every single AF point individually including the vertical, horizontal and cross arrays individually on all my lenses at different focal lengths to make adjustments

just got it back today did some quick tests and seems fixed now

shot from today. (well yesterday now lol), 9 image shot vertically at 16mm stitched, exposed for sky foreground pushed ~3 stops in post

Brisbane Skyline Pano by Tony, on Flickr