To be fair, most of the ensemble cast of the nearly all-white TUCK EVERLASTING has also not booked another Broadway show since it closed in 2016. So... perhaps the ensemble of SHUFFLE ALONG is not an anomaly. I'd love to know where they've been working since the show closed.
TUCK EVERLASTING did have one black guy in the cast. And he can kick his face. He booked CATS.