Unsolved ldtp keypress is not working with QT5.12 accessible.

[Madhavi]

Sample Code:
Accessible.name: "focusscope"
Accessible.role: Accessible.Pane
focus:true
Accessible.focusable:true
Accessible.onPressAction: {
// handle escape for ldtp tool

}

none of the keypress('<esc>') is working.

It used to work till QT5.6. We upgraded to QT5.12. Now unable to close the panels from ldtp.
Any idea what was the reason exactly?
I didn't find much differences with https://doc.qt.io/qt-5/qml-qtquick-accessible.html.