Error: 'SQL*Loader-704: Internal error: ulconnect: OCIServerAttach [0]' if an Oracle user has an '@' in the password (4380211)

If you have an Oracle user with an '@' symbol in it's password, the following error shows in the SQL*Loader wizard when it runs and imports a .ctl file:

'SQL*Loader-704: Internal error: ulconnect: OCIServerAttach [0]
ORA-12154: TNS:could not resolve the connect identifier specified'

If you run the following command in CMD, you also get the same error... e.g.:
sqlldr loader/"lo@der"@orcl control=test123.ctl

This would appear as though it is an Oracle issue, however if you use this different command below, it works in CMD:
sqlldr loader/\"lo@der\"@orcl control=test123.ctl  

Can Toad incorporate this alternative command in such scenarios when a password has an '@' symbol in it? 

WORKAROUND:
You can use a command such as this in the Windows Command Prompt:
sqlldr loader/\"lo@der\"@orcl control=test123.ctl  

STATUS:
Waiting for fix in a future release of Toad for Oracle