Yep! When cooler weather hits its quiet as a mouse. It only really does this when it's really warm out and the sun shines on the drivers side of the car.I had that same B Pillar rattle on the driver side. I bought my car September 2016 which it made it nearly everyday even if it was a smooth road etc. Then the winter came, and didn't hear a peep out of the car. Then this year once everything melted it was back. I made the appointment sometime in June of this year. They had the car for about a week to drop the headliner and take care of it. There was a VW bulletin service for this particular issue so I was assured that the VW Tech from VWOA was going to assure it was gone. Now with the majority of the summer behind us I hear it maybe once or twice out of a month where before it was everyday for a couple months leading up to the winter. I'm just going to live with that since its a huge improvement. The only negative to it all was because of the infamous greasy hands of techs my headliner being beige and some of the trim pieces had shit all over them. The dealer compensated with a couple oil changes and new front/rear wipers. I had my detail guy take it all out because I didn't trust the dealers contacts to get it fixed. All in all it was worth it. This was the only issue in my car, so I can sleep easier at night haha!
I actually haven't heard it in over a month now.