Error writing to "symbolic links" during sync

[mdrmdr]

Within this thread, the problem with syncing (reading) from Linux symbolic links was solved in FFS 11.6 (release notes: "Support reading FTP file symlinks"). This covers 99% of my use cases.

Yesterday, I changed a file on Windows, which is a symbolic link on Linux, and tried to sync it back.

That gives this error:

Cannot determine final path for "ftp://10.0.0.10/opt/automation/config_links/php8.0-cli.ini".
Operation not supported by device.


The link is: php8.0-cli.ini -> /etc/php/8.0/cli/php.ini

FileZilla is able to transfer the file. The detailed (sorry German) ftp log is:

Status:  Starte Upload von D:\Data\Work\Pi\config_links\php8.0-cli.ini
Befehl:  CWD /opt/automation/config_links
Antwort: 250 CWD command successful
Befehl:  TYPE I
Antwort: 200 Type set to I
Befehl:  PASV
Antwort: 227 Entering Passive Mode (10,0,0,10,138,151).
Befehl:  STOR php8.0-cli.ini
Antwort: 150 Opening BINARY mode data connection for php8.0-cli.ini
Antwort: 226 Transfer complete
Status:  Dateiübertragung erfolgreich, 72.624 Bytes in 1 Sekunde übertragen


Symlink handling is of course set to "follow". I'm still on FFS 11.6 and will update to 11.9 once available.

Any idea?