I think this behavior is more associated with the characteristics of the remote host that vfat uses.
If you manually create a directory A and another with a name, what result do you get? -- ⢀⣴⠾⠻⢶⣦⠀ Pablo Mestre Drake ⣾⠁⢠⠒⠀⣿⡁ -------------------------------------- ⢿⡄⠘⠷⠚⠋ https://debian.org ⠈⠳⣄⠀⠀⠀⠀ Debian, the universal operating system.