I have the same car except I think the 300's comes with a 4 speed and not 5 speed. I am pretty sure the 92s are 4 speed. Perhalps LHD have a different spec to RHD.

anyway, your description is perfrecly normal and I have the same thing. If you config you car to start on 1st gear, it will roll a little. If your car is configured to start on 2nd gear, by default, the car will not roll unless you step on it.