Also with Filesystems you have problems on AROS 68k, as reported some time, on SFS a folder moved to the same path is not deleted, you cannot rename a file from Lower Case to Upper Case, a single icon cannot be deleted.
The PFS Filesystem does not have these problems, but it does have others, whenever you copy something or modify something you have to wait a while before rebooting, if you reboot right away what was done or modified will not be found after rebooting.
This is a problem that also exists on OS3, let's say it is a flaw of PFS, on OS3 however there is a small workaround for this problem using "DiskSafe"