I have come to realise that Bobby behaves badly when Mr C is around. Let me explain...
I arrived on Sunday evening, Bobby was ok with me and all, apart from eating (yes, eating) Marks work that was left on the dinning room table.
The next day (Monday), he decided that he wanted breakfast when he wanted so he helped himself to his bowl that was on the kitchen counter, which for me is new as Bobby knows he is not allowed to do that sort of things. I had to ask Mr C to help me as Bobby reaction was a bit unexpected. In the evening, every time I would hand over stuff to Mr C, Bobby would start barking and would get very unsettled, at the end of the evening he actually tried to nip me to prevent me from getting close to Mr C.
Yesterday while I was weeding in the front garden I took Bobby out there as well so that he could see me interact with other people and not become possessive, I managed to be successful in having him relaxing again while strangers (neighbours) would talk to us.
We are now using the compress air bottle to spray in to the air to correct Bobby when he is behaving badly and Mr C is hugging me in front of Bobby so that he stops reacting every time we are together.
This morning Bobby was again the dog we brought home and that behaves well. He does not jump on me, he obeys, he gives me the paw when I ask, Mr C was not able to feed him this morning as Bobby would not settle so I did it and fed him, again all was well.
I still keep the compress air bottle around me, just in case, but I believe Bobby sees Mr C as his and does not want to share...
We also need to tackle Bobby barking when a sound happens outside or next door however he knows that he is not allowed to bark in that situation. So i need to wait for that to happen to be able to tackle it.
We both knew that Bobby would come with some issues that would only show up after he settled, I do believe that his main problem is believing that he "owns" people and wants to be in charge.
When Mr C and I saw that Bobby was such a good dog we relaxed a bit with him and fussed a bit as he seemed so happy, we even allowed him to get over excited and playful.
We are back to follow Steve and Kirsty suggestions - no fussing, he is not used to it, correct a bad behaviour (using the compress air bottle), then make him "work" a bit for the praise and treat.