Yes, I have a 2015 Domane with post mounted disc brakes. Bought a Kickr 2017 in October of 2017, and the thru-axle adapter wasn’t flush. Here are a few pics I sent Wahoo:
and
as you can see the thru-axle adapter wasn’t flush. I worked with Wahoo and a month later they sent me a new adapter that was machined down a bit to allow the adapter to sit flush without hitting the brake post.
Give Wahoo support a call. Hope that helps.