DialogFragment using a custom layout width is not matching parent

I am showing an DialogFragment with a custom layout file. When the dialog is shown, the width is not matching the parent and everything is squished.

What am I doing incorrectly?

I call the MyDialog from a fragment.

 MyDialog().show(childFragmentManager, "myDialog")

MyDialog.kt

class MyDialog : DialogFragment() {
private var _binding: DialogPlateStateBinding? = null
private val binding get() = _binding!!
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
_binding = DialogPlateStateBinding.inflate(inflater, container, false)
return binding.root
}
override fun onDestroyView() {
super.onDestroyView()
_binding = null
}
override fun onResume() {
super.onResume()
binding.root.requestLayout()
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
binding.btnCancel.setOnClickListener { dismiss() }
}
}

dialog_plate_state.xml

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="10dp">
<TextView
android:id="@+id/tv_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Update"
android:textAlignment="center"
android:textSize="20sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<com.example.libary.forms.FormPlateState
android:id="@+id/form_plate"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginVertical="10dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/tv_title" />
<Button
android:id="@+id/btn_save"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="5dp"
android:text="Save"
android:textSize="10sp"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@id/btn_cancel"
app:layout_constraintTop_toBottomOf="@id/form_plate"
/>
<Button
android:id="@+id/btn_cancel"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="5dp"
android:text="Cancel"
android:textSize="10sp"
android:textStyle="bold"
app:layout_constraintEnd_toStartOf="@id/btn_save"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/form_plate"
/>
</androidx.constraintlayout.widget.ConstraintLayout>

Add this code in MyDialog class

override fun onStart() {
super.onStart()
dialog?.window?.setDimAmount(0.1f)
dialog?.window?.setLayout(
WindowManager.LayoutParams.MATCH_PARENT,
WindowManager.LayoutParams.MATCH_PARENT
)
}
override fun getTheme(): Int {
return R.style.DialogTheme
}

Add style in styles.xml

<style name="DialogTheme" parent="Theme.AppCompat.Light.DialogWhenLarge">
<item name="android:windowNoTitle">true</item>
<item name="android:windowFullscreen">false</item>
<item name="android:windowIsFloating">false</item>
<item name="android:statusBarColor">@color/colorPrimaryDark</item>
</style>