All Editexts be replace by same value after pop a Fragment

I have a strange issue, I have 2 fragment, in first fragment, I have some custom EditText, and a button to replace this by second fragment (addToBackStack = true), then, in second fragment, I try to using popBackStack() to back to first fragment, the issue occur, all custom EditText have same value.

Below is all my code

FirstFragment

class FirstFragment : BaseFragment() {
    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?): View? {
        return inflater.inflate(R.layout.fragment_first, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        btn_next.setOnClickListener {
            val transaction = requireActivity().supportFragmentManager!!.beginTransaction()
                .replace(R.id.contentFrame, SecondFragment(), "")
            commitTransaction(transaction, true, -1)
        }
    }
}

SecondFragment

class SecondFragment : BaseFragment() {
    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?): View? {
        return inflater.inflate(R.layout.fragment_second, container, false)
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        btn_back.setOnClickListener {
            requireActivity().supportFragmentManager.popBackStack()
        }
    }
}

fragment_first.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >
    <com.sogia.replacefragmentdemo.CustomView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        />

    <com.sogia.replacefragmentdemo.CustomView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        />
    <Button
        android:id="@+id/btn_next"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="next"
        />
</LinearLayout>

fragment_second.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >
    <Button
        android:id="@+id/btn_back"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="back"
        />
</LinearLayout>

CustomView

class CustomView @JvmOverloads constructor(
    context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
) : LinearLayout(context, attrs, defStyleAttr) {
    init {
        inflate(context, R.layout.layout_custom_view, this)
    }
}

layout_custom_view.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    >
    <EditText
        android:id="@+id/edt"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="input something"
        />
</LinearLayout>

Any response would be appreciated.

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