I have discovered a useful workaround for this problem. Go to settings and choose "Free For All" as the tournament Type, which will then remove the bracket altogether and present a list of registered players. Before activating the tournament, change it to the desired format, shuffle, seed, and start your tournament. Some participants might briefly glimpse the pre-shuffled draw if they happen to refresh their screen at just the wrong moment, but it will avoid most of the problem.
I have discovered a useful workaround for this problem. Go to settings and choose "Free For All" as the tournament Type, which will then remove the bracket altogether and present a list of registered players. Before activating the tournament, change it to the desired format, shuffle, seed, and start your tournament. Some participants might briefly glimpse the pre-shuffled draw if they happen to refresh their screen at just the wrong moment, but it will avoid most of the problem.