I picked up a Blue CXC fame and fork for my cross build. Full Carbon fork. Bike has shortish headtube. TRP brakes.
Just got the bike together and took it for a test ride. Whenever I hit the front brakes hard, the front tire judders. The tips of the fork actually oscilate back and forth quickly.
I haven't investigated further other that grabbing the front brake while sitting on the bike and rocking it back and forth. There sure seems to be a fair amount of "whip" at the tips of the fork. It doesn't appear to be any play in the headset.