Editing a file located on FTP does not update the remote file

[phil]

{{{GNU Midnight Commander 4.8.3-43-g50f8b5b
Built with GLib 2.28.6
Using the S-Lang library with terminfo database
With builtin Editor
With subshell support as default
With support for background operations
With mouse support on xterm
With support for X11 events
With internationalization support
With multiple codepages support
Virtual File Systems: cpiofs, tarfs, sfs, extfs, ftpfs, fish
Data types: char: 8; int: 32; long: 32; void *: 32; size_t: 32; off_t: 64;
}}}

Open an FTP server, press F4 on some file (in my environment, Vim is started with file cached in /tmp), save and exit. The remote file is not updated.

[andrew_b]

Replying to phil:

in my environment, Vim

Duplicate of #37.