I dit it, it depends which border and how you do it. Can be risky but if the company who sells the visa run says it's ok, it is ok. 3rd extension might be difficult though
Edit : I am re applying and realised that my middle name was auto filled by the website with the information on my passeport picture. So it must not be a story of middle name. So what could it be?
in France most people have 2 first name, but we don't use the second one, never. Most administrative papers don't include them at all. When I buy a flight ticket for ex, I don't put it, just my first name.
But on my passeport it's written : Tiphany, Emeline