TPS65982: Type-C adapter can't charge Notebook with TPS65982 type-C controller

Part Number:TPS65982

My customer is using TI TPS65982 in their Thunderbolt interface Notebook, now customer find that if insert type-C adapter and apple type-C docking , the type-C adapter can't charge for Notebook. if remove apple Type-C docking , only Type-c adapter insert to notebook with TI TPS65982, The Type-C Adapter can charge for Notebook, could you let us the reason, Great Thanks.