jmessage_flutter removeReceiveChatRoomMessageListener无效

环境：flutter版本:1.12.13+hotfix.8、jmessage:0.6.3
移除聊天室监听removeReceiveChatRoomMessageListener无效，也没报错

await jmessage.removeReceiveChatRoomMessageListener((msg) async {
//这里未执行
print('remove listen chatroom');
print(msg);
});