I found a small bug which causes that the command dialog cannot be closed!
switch on the command dialog
execute a command that exceeds 30 sec (2 x timeout)
A dialogbox pops up after 15 sec
after a while (15 sec) the WinSCP icon in the taskbar flashes but the command-dialog stays on top.
Command dialog still functional,
BUT unable to close, i.e. have to kill winSCP.
second popup dialogbox is behind the WinSCP dialog?
"on top" sequence management is in error condition?