The one thing I was struggling with was when I had a small branch and I tried to prefocus ready for a bluetit or similar land, sometimes it would focus past to the field behind etc, just ready to set focus to Wide Area L this then appears to always look for closest object, just tested it indoors with some plant leaves and every time it picked the leaves even if it hunted past it came back to leaves, all other modes went right past to kitchen cupboards.
Not the best test so will try tomorrow but this could fix an annoying issue I was struggling with on the Z7 compared to D500 etc, the D500 still has the best AF of anything I have used but the Z7 I love the detail it gives for feather detail on small birds, fingers cross this really makes a difference to an annoying focus issue I had (I used to get same with Live View on DSLR’s where it would never have issue with eyepiece through mirror)