From the meeting notes [1]:

MS: Apple is not comfortable working under Khronos IP framework, because of dispute between Apple Legal & Khronos which is private. Can’t talk about the substance of this dispute. Can’t make any statement for Apple to agree to Khronos IP framework. So

1. https://docs.google.com/document/d/1F6ns6I3zs-2JL_dT9hOkX_25...