Torvax Vmar - Plaguebringer Proof issue

[SteveTheDreamer]

(Blue Server)

This NPC is related to several quests. [[Plaguebringer Proof]] and Gharin's Note.
Supposedly he is tied a 'Scripted' event in which after turning in 'A Sealed Letter' (evil or good version) to Te'Anara that triggers Torvax should then go 'drop' the next Sealed Letter on the ground in Qeynos Hills. I
I have tried this about 6 times without success. I am performing all steps in the quest, have the proper factions, receiving all other dialogues, etc.
I followed Torvax the entire nightcycle from spawn to before he despawns and he never dropped anything on the ground.

This quest seems odd. Scripted events are uncommon, but one that is triggered in an adjacent zone sounds suspicious. Can triggered scripted events across zones even work like this on P99?