The actual bug in discussion happened after the first ever Ark Pass in KR. Meaning it would only go back to day 1 of our ark pass. Anything before that was speculation, the bug that Roxx and SGR are looking into existed only after the ark pass arrived.
I’m honestly not sure what the guardian nerf patch did, but somehow…someway…it affected Chaos Dungeon loot. And its likely because they added the ark pass functionality THAT LONG AGO.
In addition, they stated they were already employing anti bot measures in their March 11th update, which implies they were possibly starting these methods in secret on March 3rd (Because the best way to delay cat-and-mouse responses are to simply not tell people)
And here’s the kicker…for those mentioning Ark Pass…
The addition of the Ark pass was likely done during this update also, it was obviously not turned on. This is kinda how people caught wind of the ark pass really early on through preview videos.
April 11th we got that teaser…it’s been a part of the game for awhile even though it wasn’t released immediately…its possible that update in March caused the issue.