NASA is considering a plan to return astronauts Barry Wilmore and Suni Williams from the International Space Station (ISS) on a SpaceX Crew Dragon, due to concerns over the Boeing Starliner's software. The spacecraft lacks an autonomous undocking feature, which could potentially brick one of the ISS's crewed-vehicle docking ports if used without proper certification. NASA is hesitant to approve the plan until the issue is resolved.

Source: https://jalopnik.com/boeing-starliner-could-brick-iss-docking-port-if-crew-a-1851615463