Control 2.0 ScrollView (QQuickScrollView) doesn't remove ScrollBars from its children tree when I override them with new ScrollBars

If I want to use a ScrollView element and want to override the ScrollBar.vertical and ScrollBar.horizontal properties (and I have to if I want to set any of the Accessible.* properties on them) I do this:

ScrollView {

   id: myScrollView

   ScrollBar.vertical: ScrollBar

   ScrollBar.horizontal: ScrollBar

Doing so, the code in QQuickScrollBarAttached that adds the new scroll bars to the ScrollView, calls setParentItem() on each new ScrollBar that I just defined, but never calls ::removeChild() on the parent object to remove the old ScrollBars. See code in QQuickScrollBar.cpp, Line: 1002, inside QQuickScrollBarAttached::setHorizontal / setVertical.

This ends up with a ScrollView that now has 4 children, 2 being the default ScrollBars and 2 being the ScrollBars I just defined.

This looks bad in Accessibility where even if I want to hide all these scrollbars, I end up with 2 or more scrollbar nodes being announced in Narrator/Voiceover