How much did the repair cost you?
I have this suspicion my 2011 2.0 Sportwagon has the same problem - it's been dripping a bit and having removed the undertray yesterday, the heatshield part of it was literally swimming in oil and the sump was very wet.
Wiping it all down, I ran the engine with the undertray removed, and low and behold, a dribble of oil eventually ran from the block where the dipstick tube came down, and dripped down the side of the sump.
Having looked, access to the tube seems a right swine - it's seems like it is buried behind the DPF - so I think I will leave this one to my local specialist and let them deal with it!