When I hit the Disconnect Button, instead of be disconnected from server it seems that it performs a re-connection, a refresh of the actual connection at the server. Tried on many different server with same results. If I quit the program the disconnection sequence seems to work fine.

Cyberduck version: 4.5.2 (15055) OS: Apple OSX 10.9.4 iMac 27" - 2.8 GHz Intel Core i5

QUIT
421 Timeout - try typing a little faster next time
220-#
220-#                                 
220-#  Aruba.it                    
220-#  The Web Hosting Company     
220-#                                 
220-#
220 This is a private system - No anonymous login
USER 2145545@aruba.it
331 User 2145545@aruba.it OK. Password required
PASS ********
230 OK. Current restricted directory is /
FEAT
211-Extensions supported:
 EPRT
 IDLE
 MDTM
 SIZE
 MFMT
 REST STREAM
 MLST type*;size*;sizd*;modify*;UNIX.mode*;UNIX.uid*;UNIX.gid*;unique*;
 MLSD
 AUTH TLS
 PBSZ
 PROT
 ESTA
 PASV
 EPSV
 SPSV
 ESTP
211 End.
SYST
215 UNIX Type: L8
CWD /www.davidefoschi.it/wp-content/uploads/2014
250 OK. Current directory is /www.davidefoschi.it/wp-content/uploads/2014
TYPE A
200 TYPE is now ASCII
PASV
227 Entering Passive Mode (62,149,141,10,196,12)
MLSD
150 Accepted data connection
type=cdir;sizd=4096;modify=20140901091324;UNIX.mode=0755;UNIX.uid=19004667;UNIX.gid=100;unique=67g95ef3b7; .
type=pdir;sizd=4096;modify=20140203075245;UNIX.mode=0755;UNIX.uid=19004667;UNIX.gid=100;unique=67g1dcc20; ..
type=dir;sizd=36864;modify=20140203075712;UNIX.mode=0755;UNIX.uid=19004667;UNIX.gid=100;unique=67g95ef3b8; 01
type=dir;sizd=4096;modify=20140304102635;UNIX.mode=0755;UNIX.uid=19004667;UNIX.gid=100;unique=67g8554c8b; 02
type=dir;sizd=4096;modify=20140304143004;UNIX.mode=0755;UNIX.uid=19004667;UNIX.gid=100;unique=67g216e82e; 03
type=dir;sizd=4096;modify=20140507071009;UNIX.mode=0755;UNIX.uid=19004667;UNIX.gid=100;unique=67g2461ed2; 04
type=dir;sizd=4096;modify=20140603131758;UNIX.mode=0755;UNIX.uid=19004667;UNIX.gid=100;unique=67g18ef059; 05
type=dir;sizd=12288;modify=20140618064811;UNIX.mode=0755;UNIX.uid=19004667;UNIX.gid=100;unique=67g6cfc8b5; 06
type=dir;sizd=4096;modify=20140710100718;UNIX.mode=0755;UNIX.uid=19004667;UNIX.gid=100;unique=67g15010b8; 07
type=dir;sizd=4096;modify=20140825141111;UNIX.mode=0755;UNIX.uid=19004667;UNIX.gid=100;unique=67g4970c6e; 08
type=dir;sizd=4096;modify=20140901091324;UNIX.mode=0755;UNIX.uid=19004667;UNIX.gid=100;unique=67g392197c; 09
226-Options: -a -l 
226 11 matches total