How do I undock the toolbar for playback?

I tried unsuccessfully many times to click in some suitable place to enable me to undock the playback toolbar, and make it a separate window from the main MuseScore 4 window.
(Of course I wanted to do this so that I would have the additional controls for changing the tempo and position in the score of the playback.)
What did I do wrong? Please give more explicit details about how to undock the playback toolbar.
Or is there perhaps a bug preventing me from undocking the playback toolbar.
Thanks in advance.
Michael