Listview highlight move animation stops when adding items to the model

Scenario:
We used the list view in a keyboard-only environment and wanted the currentItem to stay in the same place on the screen.

So, we created a listview with the following configuration:

highlightMoveVelocity: -1
highlightMoveDuration: 1000
highlightFollowsCurrentItem: true
preferredHighlightBegin: 0
highlightRangeMode: ListView.StrictlyEnforceRange
interactive: true
displayMarginBeginning: 100
displayMarginEnd: 100

We used the arrow keys (up/down) to navigate the list.
It worked most of the time including the animation.
But, when we added items to the model, the highlight move animation stopped causing a glitch in the UI.

This happen also when we use custom animation as described in listview-highlight-move-animation-glitch-custom-animation.qml.

I've attached a patch that solves the problem only in our case using the default animation and not the custom animation. Even so, I don't know if this patch is the proper solution.