CB 10.2 FMX TreeView控件AlternatingRowBackground属性导致Argument out of range错误

[ooolinux]

CB 10.2 FMX TreeView控件AlternatingRowBackground属性导致Argument out of range错误，
测试代码如下：
//---------------------------------------------------------------------------

#include <fmx.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.fmx"
TForm1 *Form1;
TTreeViewItem *item1,*item2;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
item1=new TTreeViewItem(this);
item1->Text="China";
item1->Parent=TreeView1;

item1=new TTreeViewItem(this);
item1->Text="US";
item1->Parent=TreeView1;

TreeView1->ExpandAll();
TreeView1->AlternatingRowBackground=true;//因为这行，Button1Click出错：Argument out of range.
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)
{
item1=TreeView1->ItemByText("China");
item2=new TTreeViewItem(this);
item2->Text="Shanghai";
item2->Parent=item1;
}
//---------------------------------------------------------------------------

有人可以向英巴提交一下这个问题吗？

[ooolinux]

[abc_ustone]