The "use synchronized browsing" setting fails in Site Manager

[William Spademan]

When I click on the Site Manager icon, then click on any site that has "use synchronized browsing" checked, I get the error message "Current remote directory (whatever) is not below the synchronization root. Synchronized browsing has been disabled." (yes it does say "not below").

Then, if I click on the synchronized browsing toggle icon, synchronization works fine.

Here is the message log:
Connecting to 168.144.87.128:21...
Status: Connection established, waiting for welcome message...
Trace: CFtpControlSocket::OnReceive()
Response: 220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
Response: 220-You are user number 1 of 50 allowed.
Response: 220-Local time is now 14:36. Server port: 21.
Response: 220-IPv6 connections are also welcome on this server.
Response: 220 You will be disconnected after 15 minutes of inactivity.
Trace: CFtpControlSocket::SendNextCommand()
Command: USER ws
Trace: CFtpControlSocket::OnReceive()
Response: 331 User ws OK. Password required
Trace: CFtpControlSocket::SendNextCommand()
Command: PASS
Trace: CFtpControlSocket::OnReceive()
Response: 230 OK. Current restricted directory is /
Trace: CFtpControlSocket::SendNextCommand()
Command: SYST
Trace: CFtpControlSocket::OnReceive()
Response: 215 UNIX Type: L8
Trace: CFtpControlSocket::SendNextCommand()
Command: FEAT
Trace: CFtpControlSocket::OnReceive()
Response: 211-Extensions supported:
Response: EPRT
Response: IDLE
Response: MDTM
Response: SIZE
Response: MFMT
Response: REST STREAM
Response: MLST type*;size*;sizd*;modify*;UNIX.mode*;UNIX.uid*;UNIX.gid*;unique*;
Response: MLSD
Response: AUTH TLS
Response: PBSZ
Response: PROT
Response: TVFS
Response: ESTA
Response: PASV
Response: EPSV
Response: SPSV
Response: ESTP
Response: 211 End.
Status: Server does not support non-ASCII characters.
Status: Connected
Trace: CFtpControlSocket::ResetOperation(0)
Trace: CControlSocket::ResetOperation(0)
Trace: Measured latency of 129 ms
Status: Retrieving directory listing...
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::ChangeDirSend()
Command: CWD /www/sites/all/modules/rcredits
Trace: CFtpControlSocket::OnReceive()
Response: 250 OK. Current directory is /public_html/sites/all/modules/rcredits
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::ChangeDirSend()
Command: PWD
Trace: CFtpControlSocket::OnReceive()
Response: 257 "/public_html/sites/all/modules/rcredits" is your current location
Trace: CFtpControlSocket::ResetOperation(0)
Trace: CControlSocket::ResetOperation(0)
Trace: CFtpControlSocket::ParseSubcommandResult(0)
Trace: CFtpControlSocket::ListSubcommandResult()
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::TransferSend()
Command: TYPE I
Trace: CFtpControlSocket::OnReceive()
Response: 200 TYPE is now 8-bit binary
Trace: CFtpControlSocket::TransferParseResponse()
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::TransferSend()
Command: PASV
Trace: CFtpControlSocket::OnReceive()
Response: 227 Entering Passive Mode (168,144,87,128,16,156)
Trace: CFtpControlSocket::TransferParseResponse()
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::TransferSend()
Command: MLSD
Trace: CTransferSocket::OnConnect
Trace: CFtpControlSocket::OnReceive()
Response: 150 Accepted data connection
Trace: CFtpControlSocket::TransferParseResponse()
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::TransferSend()
Trace: CTransferSocket::OnClose(0)
Trace: CTransferSocket::TransferEnd(1)
Trace: CFtpControlSocket::OnReceive()
Response: 226-Options: -a -l
Response: 226 49 matches total
Trace: CFtpControlSocket::TransferParseResponse()
Trace: CFtpControlSocket::SendNextCommand()
Trace: CFtpControlSocket::TransferSend()
Trace: CFtpControlSocket::TransferEnd()
Trace: CFtpControlSocket::ResetOperation(0)
Trace: CControlSocket::ResetOperation(0)
Trace: CFtpControlSocket::ParseSubcommandResult(0)
Trace: CFtpControlSocket::ListSubcommandResult()
Trace: CFtpControlSocket::ResetOperation(0)
Trace: CControlSocket::ResetOperation(0)
Status: Directory listing successful
Status: Connecting to 168.144.87.128:21...
Status: Connection established, waiting for welcome message...
Trace: CFtpControlSocket::OnReceive()
Response: 220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
Response: 220-You are user number 2 of 50 allowed.
Response: 220-Local time is now 14:44. Server port: 21.
Response: 220-IPv6 connections are also welcome on this server.
Response: 220 You will be disconnected after 15 minutes of inactivity.
Trace: CFtpControlSocket::SendNextCommand()
Command: USER ws
Trace: CFtpControlSocket::OnReceive()
Response: 331 User ws OK. Password required
Trace: CFtpControlSocket::SendNextCommand()
Command: PASS
Trace: CFtpControlSocket::OnReceive()
Response: 230 OK. Current restricted directory is /
Status: Server does not support non-ASCII characters.
Status: Connected
Trace: CFtpControlSocket::ResetOperation(0)
Trace: CControlSocket::ResetOperation(0)
Trace: Measured latency of 127 ms
Trace: CFtpControlSocket::OnReceive()
Response: 421 Timeout - try typing a little faster next time
Trace: Unexpected reply, no reply was pending.
Trace: CRealControlSocket::OnClose(0)
Error: Connection closed by server
Trace: CFtpControlSocket::ResetOperation(66)
Trace: CControlSocket::ResetOperation(66)
Trace: CFtpControlSocket::OnReceive()