RuntimeException in onDestroy

[RuiRoque-FA]

This is from RxLoaderBackendNestedFragmentCompat:

@Override
public void onDestroy() {
    super.onDestroy();
    if (!hasSavedState) {
        RxLoaderBackendFragmentHelper helper = getHelper();
        if (helper != null) {
            helper.onDestroy(getStateId());
        }
    }
}

@Override
public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    hasSavedState = true;
    RxLoaderBackendFragmentHelper helper = getHelper();
    if (helper != null) {
        helper.onSaveInstanceState(outState);
    }
}

If I rotate the device, the 'onSaveInstanceState' method is invoked, and the 'hasSavedState' is set to true, and in the onDestroy, the check is ok. Nothing wrong here.

But when I press back to leave the fragment and the Activity. The 'onSaveInstanceState' is not invoked and the 'onDestroy' crashes the app:

java.lang.RuntimeException: Unable to destroy activity {my.app/my.app.activities.MyActivity}: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3831)
at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:3849)
at android.app.ActivityThread.-wrap5(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1398)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
at android.support.v4.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1533)
at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1551)
at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:696)
at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:662)
at me.tatarka.rxloader.RxLoaderBackendNestedFragmentCompat.getHelper(RxLoaderBackendNestedFragmentCompat.java:45)
at me.tatarka.rxloader.RxLoaderBackendNestedFragmentCompat.onDestroy(RxLoaderBackendNestedFragmentCompat.java:76)
at android.support.v4.app.Fragment.performDestroy(Fragment.java:2322)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1240)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1290)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1272)
at android.support.v4.app.FragmentManagerImpl.dispatchDestroy(FragmentManager.java:2186)
at android.support.v4.app.Fragment.performDestroy(Fragment.java:2318)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1240)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1290)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1272)
at android.support.v4.app.FragmentManagerImpl.dispatchDestroy(FragmentManager.java:2186)
at android.support.v4.app.FragmentController.dispatchDestroy(FragmentController.java:271)
at android.support.v4.app.FragmentActivity.onDestroy(FragmentActivity.java:388)
at android.support.v7.app.AppCompatActivity.onDestroy(AppCompatActivity.java:209)
at my.app.activities.BaseActivity.onDestroy(BaseActivity.java:73)
at android.app.Activity.performDestroy(Activity.java:6407)
at android.app.Instrumentation.callActivityOnDestroy(Instrumentation.java:1142)
at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:3818)
... 9 more

What am I doing wrong?