MyAdapterFix.kt

class MyFragment : Fragment() {
    // ...
    fun setupAdapter() {
        myAdapter = MyAdapter(context, viewLifecycleOwner)
    }
}

class MyAdapter(
    private val context: Context,
    private val viewLifecycleOwner: LifecycleOwner
) : RecyclerView.Adapter<RecyclerView.ViewHolder>() {

    init {
        viewModel.items.observe(viewLifecycleOwner) {
            // Update items and dispatch updates
        }
    }
    // ...
}