meloƞ
even on latest master, the changes to the whitelist by davide now requires to click the button twice with delay.
another thing that happens/happened before to me ateleast is that the dummy is stuck in connecting and you'll get a "didnt acke for 100 seconds" echo message, which.. requires you to wait for 100 seconds :p
you can circumvent this by trying to join dummy, if you see that it doesnt connect insantly then just do dummy_disconnect
in F1 and then connect it again, it joins then for me