Прошу обратить внимание на дату изменений. Требование к hardware event появилось только после выхода катаклизма.
Patch 4.1.0 (2011-04-26): Protected; requires a hardware event.
https://wowpedia.fandom.com/wiki/API...attlefieldPort

April 29, 2011, 5:07 p.m.
So, as part of our ongoing effort to reduce cheats in the game, that function had to be restricted.
https://www.bluetracker.gg/wow/topic...efieldport1-0/