NetBSD 11 amd64 installer broken?

Is it just me, or is the amd64 install image for NetBSD 11 not booting?

https://nycdn.netbsd.org/pub/NetBSD-daily/netbsd-11/20251020141107Z/images/NetBSD-11.0_BETA-amd64-install.img.gz

The kernel boots, but it doesn't like the root device. I even tried this 
on two different systems. The GPT type is listed as "unknown". From a 
running NetBSD system, the GPT type looks fine:

     start     size  index  contents
         0        1         PMBR
         1        1         Pri GPT header
         2       32         Pri GPT table
        34     2014         Unused
      2048   262144      1  GPT part - EFI System
    264192  4853760      2  GPT part - NetBSD FFSv1/FFSv2
   5117952     2015         Unused
   5119967       32         Sec GPT table
   5119999        1         Sec GPT header
   5120000  2744320         Unused

https://www.klos.com/~john/installnoroot.jpg

But wait! There's more! If I use a blue USB-3 port, one test machine 
boots the install kernel and can see the NetBSD FFS partition.

With the other, all USB ports act the same, but if I unplug the USB stick 
and plug it in to a different port (both a different port of the same kind 
or a different kind of port)(on both systems), the GPT types are correct:

https://www.klos.com/~john/installreinserted.jpg

Does anyone know why a booting kernel can't read the GPT partition 
correctly sometimes?

John