issue with loading QML ListView through C++

I am trying to load a ListView defined in QML which is set as source of a QQuickWidget onto another QQuickWidget.

The issue faced is that on first instantiation, the list is not displayed but on search through the list, the list gets displayed.

code is attached
Attachment 11276
Attachment 11279
Attachment 11280


readwidget is loaded on QMainwindow
read widget contains QWebEngineview, toolbar

click 'highlight' (tool bar) -> show highlight list.

Here the listview is shown, but the list items are not displayed.

but on searching on the list, list items are displayed.

kindly help me resolve the issue.

Attached screen shots of the same
Attachment 11277
Attachment 11278

That looks quite unnecessary complicated.

Why not just expose the data from C++ and use it as a model in QML?

Cheers,
_