Activation button

What is the function of the activation button in the top right corner? I can´t find any sense in it. Dorico automatically switches any score into active, when I make the window active. Independent of the activation button. The button is even not reacting, if I press it.
I would like to switch between scores whithout activating the playback-configuration , which seems to be impossible at the moment.
So, it´s a pain to copy stuff between different scores because it takes up to 10 seconds for Dorico to active the playback.
I know that I can turn the playback configuration to silence, but thats no solution.

At the moment, the activation button is non-functional, I’m afraid, but we keep it there because we absolutely do intend to make it possible to keep only one project active for playback to smooth out this kind of workflow.