recycler view not scrolling inside bottom sheet dialog

I have structure below

<LinearLayout>
   <ViewPager>
</LinearLayout>

inside ViewPager fragment layout

<LinearLayout android:orientation=vertical>
   <RecyclerView android:nestedScrollingEnabled=false />
   <Button />
</LinearLayout>

But nestedScrollingEnabled doesn't work from xml. But when I execute code below in bottom sheet fragment, it works, I don't know why

    try {
        val field = ViewPager2::class.java.getDeclaredField("mRecyclerView")
        field.isAccessible = true
        (field[binding.pager] as RecyclerView).isNestedScrollingEnabled = false
    } catch (e: NoSuchFieldException) {
        Timber.e(e)
    } catch (e: IllegalAccessException) {
        Timber.e(e)
    }

pager.children.find { it is RecyclerView }?.let {
    (it as RecyclerView).isNestedScrollingEnabled = false
}

this code solved the problem without using reflection