Keyboard focus is lost when changing the currentIndex of a ListView in onActiveFocusChanged

When changing the currentIndex property of a ListView in onActiveFocusChanged the keyboard focus gets lost.

I'm attaching a sample code that demonstrates that. If you run it on qmlviewer and press the down arrow, the square loses the active focus (goes blue from red) but the listview does not get it (the text does not become red).

If you comment the "currentIndex = 1", you'll see that the text does indeed become red

The debug lines say

When started:
Master Active Focus changed: true

When pressing the down arrow:
Slave Active Focus changed: true
Slave Active Focus changed: true
Master Active Focus changed: false
Slave Active Focus changed: false

If you comment the "currentIndex = 1" line you get

When started:
Master Active Focus changed: true

When pressing the down arrow:
Slave Active Focus changed: true
Master Active Focus changed: false

That is what i would expect also for the first case