How come that upper-left button in the toolbar (default) navigates me back properly to the previous fragment but the upper right button (my implemented button) which is called via

navController.navigate(R.id.action_global_goOnlineFragment)

takes me to an empty fragment? All other fragments will also be displayed as empty... the only thing that loads properly is the toolbar. Please help me I have been scrathing my head for too long

Are you calling the proper functions when the fragment is created to populate the data?