If the config.xml file is given as parameter at start up, all the fields are duplicated in the QuickRev gui.
QuickRev is designed to be able to load different configuration files, so the information can be splitted into different files. When defining additional input fields all the fields from all config files will be added. Furthermore there are two different ways to load config files, as built-in files (copied into the QuickRev.jar file) or as command line option.
The problem here is, that you loaded your config file twice. Once as built-in config file and another time from the command line - so this is not a bug.
Nevertheless maybe there should be some kind of error message when loading different configuration files which define intput fields with the same name.
fixed with release 1.11.0:
added error message when loading config files with duplicated component names