this happened to me on a different device when the kernel version was too old for magiskAs with DP1, had to use the Pixel 7 Pro boot image to root DP2. Interestingly, after rooting (using Canary 25206) the Magisk app thinks I'm not rooted (Installed N/A). Because of this, I have no access to Superuser or Modules tabs. I am, however, indeed rooted as I am getting superuser permissions for the apps and mods that were already granted permission.
Does anyone else experience a similar observation shile using the same or different Magisk version?