Cloning of build configurations incorrect

(I have the German version, so I must guess the namings of buttons/tabs/etc.)

When cloning a build configuration, the arguments in "Steps for creation" ("Erstellungsschritte") are duplicated, e.g.

mingw32-make.exe all --> cloning --> mingw32-make.exe all all

and in Steps for cleaning (Schritte zur Bereinigung), the arguments get lost, e.g.

mingw32-make.exe clean --> cloning --> mingw32-make.exe