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In a AppCompatActivity with a recyclerview in a fragment (myFragment1), viewholders and so on, if I click on an item then myFragment2 will display the detail of the item. In this phase I want to create an animation between  the two fragments with shared elements.
Steps to reproduce the behaviour:

import android.view.View;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
[...]
public class AppActivity extends AppCompatActivity

myFragment1.setSharedElementReturnTransition(new MyNewTransition());
myFragment1.setSharedElementEnterTransition(new MyNewTransition());
[...]
a) getSupportFragmentManager().beginTransaction()
                    .addSharedElement(myImage, "mytransition")
                    .replace(R.id.recycler_view_container, myFragment2)
                    .commit();

b) getSupportFragmentManager().beginTransaction()
                    .addSharedElement(myImage, "mytransition")
                    .add(R.id.recycler_view_container, myFragment2)
                    .hide(myFragment1)
                     commit();
In the (a) code, the image transition is correct and animation occurs perfectly between the shared elements, but I don't need this.
In the (b) code, the only difference is that myFragment1 is being hidden and the myFragment2 is added, in this case both the enter transition and the return transition are broken and no animation occurs.
I need the (b) code because "replace"-ing the fragments will destroy the myFragment1 and rebuilding it is a heavy-load process.
I think this is a bug with androidx libraries