Source is available so if you want to fix that glaring bug and just tinker with it by all means, hack away. FileTeePee is hosted on Github and the checkout goes something like this:
git pull https://github.com/memecode/Lgi.git git pull https://github.com/memecode/i.Ftp.git
FileTeePee is designed to work from portable media like USB keys as well. It doesn't store anything in the registry and will find it's resource files and options via relative paths. A full install is about 900kb so it doesn't eat up much space on your portable storage. If you don't need SFTP support then you can delete libssh.dll and libeay32.dll to make it even smaller!
Language Code Age Author(s) English (en) [Native] Matthew Allen Turkish (tr) [Added v2.22, 11-Mar-2011] Kamilovic (kamilovic1975 AT mynet DOT com) Swedish (sv) [Added v2.00, 14-Mar-2007] Scott Maguire (lochmaddy AT gmail DOT com) Portuguese (pt) [Added v2.00, 13-Mar-2007] Luis Bastos (luisbastos DOT programaslivres AT gmail DOT com) Russian (ru) [Added v1.99, 6-Mar-2006] Natasha Kazak (natalik AT hotmail DOT com) Dutch (nl) [Added v1.97, 22-Nov-2005] Bardo Brunink (bardog AT hetnet DOT nl) German (de) [Added v1.85, 22-Feb-2005] Philipp Krieger (philipp.krieger AT web DOT de) Farsi (fa) [Added v1.85, 1-Dec-2004] French (fr) [Added ???] (For information on translation the software see this)
If you have an issue with FileTeePee check out the list of open bug reports first and then file a new report if your issue is not already listed.