Shortcut stops triggering Action when the Action is assigned to a Button in a Repeater

Shortcut stops triggering Action when the Action is assigned to a Button in a Repeater.

This affects QtQuick applications using Controls2.

How to reproduce:

1) Create an Action and assign a shortcut to it, do some action on the trigger

2) Create a Repeater (with only one repetition) with a Button delegate

3) Assign the Action to the Button delegate

4) Start application, hit the shortcut -> BUG -> nothing happens

5) Observation - if the shortcut is reassigned to the Action it starts working again

Desired behavior of course is that the Action triggers. When removing the Repeater the Action triggers. When including it in a simple Button (outside of a Repeater) the Action triggers.

Real use cases include creating multiple buttons in a Repeater and assigning them Actions from an ActionGroup based on their index.

I'm including a minimal example as an attachment.