Comment 2 for bug 1843417

Some more comments that I forgot to include:

- The fsck issue is discussed more on https://forum.snapcraft.io/t/core18-shortcoming-missing-fsck-vfat-for-boot-fat-partition/13276

- The machine does not have an RTC and may also surface a bug in our RTC handling. Specifically on the Raspberry Pi it relies on an accurate timestamp of /var/lib/snapd/snaps and it may be so that nothing is touch'ing that file and sync'ing the filesystem reliably on shutdown.