Confirmed bug with the Event Filter Tab's Privacy checkbox. Temp fix for this is to change the following code in eq2ui_mainhud_guild.xml
from
Code:
DynamicData="/GameData.UIState.Guild.NotifyGuildMembersOnline" Location="18,435" Name="Privacy"
to
Code:
DynamicData="/GameData.UIState.Guild.GuildEventPrivacy" Location="18,435" Name="Privacy"