The help text for the block join function states "this will only have an effect when you're the session host". However, when I am not session host and someone whom I've join blocked in my player history attempts to join , they are still unable to join, and Stand provides the "blocked xxx from joining because of Player Join Reactions" notification
You may be confused. There is no way to block joins as non-host. If you have the 'H' tag, you are the session host. The 'S' tag for Script Host is unrelated.
The help text for the block join function states "this will only have an effect when you're the session host". However, when I am not session host and someone whom I've join blocked in my player history attempts to join , they are still unable to join, and Stand provides the "blocked xxx from joining because of Player Join Reactions" notification