I have the same problem. I made a temporary patch and rebuild XTP.

BOOL CXTPSkinObjectFrame::OnHookDefWindowProc(UINT nMessage, WPARAM& wParam, LPARAM& lParam, LRESULT& lResult)

if (WM_CTLCOLORBTN == nMessage ||

WM_CTLCOLORDLG == nMessage ||

WM_CTLCOLORSTATIC == nMessage ||

WM_CTLCOLOREDIT == nMessage ||

WM_CTLCOLORLISTBOX == nMessage)

{

if (m_strClassName == _T("COMBOBOX"))

return FALSE;

/*

if (IsDefWindowProcAvail(nMessage) &&

(m_dwDialogTexture != ETDT_ENABLETAB || !m_bActiveX))

{

return FALSE;

}

*/

if (nMessage == WM_CTLCOLOREDIT || nMessage == WM_CTLCOLORLISTBOX)

{

::SetBkColor((HDC)wParam, GetColor(COLOR_WINDOW));

::SetTextColor((HDC)wParam, GetColor(COLOR_WINDOWTEXT));

lResult = (LRESULT)GetMetrics()->m_brushWindow;

return TRUE;

}

if (CWnd::GrayCtlColor((HDC)wParam, (HWND)lParam,

(UINT)(nMessage - WM_CTLCOLORMSGBOX),

GetMetrics()->m_brushDialog, 0))

{

lResult = (LRESULT)GetClientBrush((HDC)wParam, (HWND)lParam, (UINT)(nMessage - WM_CTLCOLORMSGBOX));

return TRUE;

}

}

return CXTPSkinObject::OnHookDefWindowProc(nMessage, wParam, lParam, lResult);