Reboot without properly unmounting after install

While playing with -Current, I noticed that after the install and when given the option to reboot, the system pretty much almost instantly reboots, which begs the question - does the newly formatted partitions even get properly unmounted? It seems not because when I boot into the new system, JFS runs fsck, and also the kernel complains that the vfat partition (EFI), is now dirty because it was not properly unmounted. So, has anyone else noticed this? Can anyone else duplicate this, and shouldn't the installer unmount the newly created partitions after the install? I thought at one point Slackware has already done this, but now I am not so sure. :scratch: