Radio button example issue

Principle Version: 6.15 (6017)
macOS Version: 11.6 (20G165)

When in preview, the ‘component artboard’ option for one of two items does not determine the artboard of the item, though the artboard is not frozen in the timeline.

In the simplified example, button 1 behaves as expected but button 2 does not.

Simplified repro file and video-example here:

Link expires on 3/6/2022 — just shout if another is needed.
:v:

Addendum:

If there’s a better way to set up a radio button set, that’d also be relevant.

Would you like to re-upload it so I can take a look?