Please help me with this bug

Hi, im here to report a bug that has been on minecraft for me on 1.2,1.2.1 and 1.2.2. The invite to game button dosent show up in my worlds only when a friend invites me it appears but i can only invite my friends to his world. I dont know if this has to do with my Xbox account or minecraft. Ive uninstalled and reinstalled minecraft and it still dosent work.