I don't know what you mean by "abused" its a feature that was in Vanilla WoW, was on the server for quite some time, and exists in Blizzard's current redux of Classic WoW. This isn't a bugfix its a nerf.
Since the restart it seems that Reckoning is no longer working. I saw the other thread using /sit wasn't working with a warrior mechanic either now. This seems odd to me since Reckoning with /sit is working on the classic beta
and was working just fine yesterday.