The uppermost linked stave controls playback only after saving and reloading the score.
In this post Marc sabatella wrote >> Regarding changing the order of [linked] staves - it is the top staff that controls the playback, but this determination is only made when the score is laoded, apparently. I'd call that a bug.
In your example, after switching the order, try saving and reloading. Then you get the correct results.
This situation occurs after dragging a linked staff to the top of the Instrument dialog instrument staff list.
UPDATE 2021-08-05: This "topmost" sounding issue seems to occur only between a Linked normal staff and a tablature staff. But I have not tested extensively to confirm this.