Overlay icons are painted stretched

Question

I am porting a C++Builder 2009 project to C++Builder 11.

For some strange reason overlay icons are painted stretched in a custom made object that inherits from TTreeView. It obviously works properly when built with C++Builder 2009. I don't do any custom painting in it.

When I create a new project, add a TTreeView and TImageList at design time, don't change any default settings, just add two icons and two items, per below image and code, everything appears to work fine:

__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
ImageList1->Overlay(0, 0) ;
TreeView1->Items->Item[1]->OverlayIndex = 0 ;
}

When I create my own TTreeView descendant and do the same, the overlay icon is stretched out (on the right):

//---------------------------------------------------------------------------
class MyTreeView : public TTreeView
{
public :
        MyTreeView(TPanel *TreeViewLocation)
            : TTreeView(TreeViewLocation)
            {
            Parent = TreeViewLocation ;
            Align  = alClient ;
            }

        virtual __fastcall ~MyTreeView() {}

};
//---------------------------------------------------------------------------

MyTreeView *TreeView2 ;

//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
ImageList1->Overlay(0, 0) ;
TreeView1->Items->Item[1]->OverlayIndex = 0 ;

TreeView2 = new MyTreeView(Panel1) ;
TreeView2->Items->Add(NULL, L"Item1")->ImageIndex = 1 ;
TreeView2->Items->Add(NULL, L"Item2")->ImageIndex = 1 ;
TreeView2->Images = ImageList1 ;
TreeView2->Items->Item[1]->OverlayIndex = 0 ;
}
//---------------------------------------------------------------------------

Using the same icon and ImageList in the ported project:

It's as if TTreeView asks TImageList to paint the overlay icon with wrong Canvas dimensions ?

FYI, here's the result from the exact same code built with C++Builder 2009:

EDIT

The plot thickens

I just tested this on a range of OS (in a VM VirtualBox) and I did not see the problem on older OS (XP, Vista, W7, W8 and even W10 (older not up to date version)). However, I do see it on my W10 development system (up to date) I also tested it on W11 in a VirtualBox and there the the problem also exists. So it's not just my system, it's related to latest Windows updates. Super annoying ..