It happened a bunch.
I’m fairly sure it was, people used to just stand at the pillars and borderline afk because nothing would really spawn. Most of the terror events were stupid easy for a while until they got buffed. A bunch of them were tweaked in beta for a while, but it was super heavy handed and they undid some while leaving others fairly neutered compared to what they were like before (fort).
“Terror Events now scale with difficulty.”
Was in the 2.0 patch notes, so I assume it was then, with the tweaking down being in 2.0.15.