Thats how it is where I am Erricferret. Until the captain signs for it it's engineerings aircraft and my responsibility.
Once had a capatain complain that we were 'getting in one anothers way' and basicly tried to order me off the flight deck. I agreed that we were indeed getting in one anothers way, then pointed out it was my flight deck and asked him to leave until I was finished. A nice moment dealing with one of the very few rude pilots I have ever met.