ilezilla switches UTF8 support off after that problems renaming filenames containing UTF8 chars

[arturr]

I open my FTP server (FTP server software unknown, part of irtual webserver)
there are some folders and files containing letter "õ" character 245 in Windows 1257 character set.

after that Filezilla switches UTF-8 support off

If I try to rename some files wich are uploaded to the server through Internet Explorer(filenames are invalid) FileZilla says that there is no such file (tough there is the file in the file list).

Copied messag log

Status: Connection established, waiting for welcome message...
Status: Initializing TLS...
Status: Verifying certificate...
Status: TLS connection established.
Status: Logged in
Status: Retrieving directory listing...
Status: Invalid character sequence received, disabling UTF-8. Select UTF-8 option in site manager to force UTF-8.
Status: Directory listing of "/" successful
Status: Sending keep-alive command
Status: Retrieving directory listing of "/Kriminaalromaanid ja ponevikud"...
Status: Directory listing of "/Kriminaalromaanid ja ponevikud" successful
Status: Retrieving directory listing of "/Kriminaalromaanid ja ponevikud/ANN GRANGER"...
Status: Directory listing of "/Kriminaalromaanid ja ponevikud/ANN GRANGER" successful
Status: Renaming '/Kriminaalromaanid ja ponevikud/ANN GRANGER/Ann Granger Hukatus häving ja mõrv.txt' to '/Kriminaalromaanid ja ponevikud/ANN GRANGER/Ann Granger Hukatus häving ja mõrv.txt'
Command: RNFR Ann Granger Hukatus häving ja mõrv.txt
Error: Connection timed out after 20 seconds of inactivity
Status: Disconnected from server
Status: Resolving address of ftp...
Status: Connecting to 195.xxx.xx.xx:21...
Status: Connection established, waiting for welcome message...
Status: Initializing TLS...
Status: Verifying certificate...
Status: TLS connection established.
Status: Logged in
Status: Renaming '/Kriminaalromaanid ja ponevikud/ANN GRANGER/Ann Granger Hukatus häving ja mõrv.txt' to '/Kriminaalromaanid ja ponevikud/ANN GRANGER/Ann Granger Hukatus häving ja mõrv.txt'
Command: CWD /Kriminaalromaanid ja ponevikud/ANN GRANGER
Response: 250 OK. Current directory is /Kriminaalromaanid ja ponevikud/ANN GRANGER
Command: PWD
Response: 257 "/Kriminaalromaanid ja ponevikud/ANN GRANGER" is your current location
Command: RNFR Ann Granger Hukatus häving ja mõrv.txt
Response: 550 Sorry, but that file doesn't exist
Status: Sending keep-alive command

[zetinja]

I have encountered the same bug in version 3.24.0. The offending symbol is ë this time. The client swithces off utf8 support and forbids all operations with any files that contain nonascii characters.
When I force utf8 setting in site manager, I can operate with all files except the one that contains the offending character. For this file I get 550 No such file or directory error.