Add me to the leaker list. I had my 2015 on the ramps today to do an oil change. Passenger side seal looked OK, but the drivers side is seeping enough that it has leaked down to the RMM.
My car has the first generation metal rimmed seals. For those that have had the new design of rubber seal, has it solved your issues, or are you still having seeping/leaking?
I suspect as many have stated, poor installation will cause a leak regardless of the seal. So it all comes down to how good a service tech works on your car, 'Do yah feel lucky punk, will do yah?'...
Let me know if the new seal design solved your leak issue.