That's it. That's all that happened. This is all a classic case of people reading things how they want to read them in order to support their side either because they don't fully understand English or they just enjoy the false support of ignorance.
When he said they took steps to "fix it", they meant the total damage of the sword's proc, not Retribution's damage as a whole, for one example.
For another example, that same bullet point DOES say it's a bug. Like he said, it wasn't an accidental bug fix because it was an intentional bug fix. It was simply proccing too much.
Finally, he says they apologize for not finding this out sooner, so they DID find this out pretty recently.
Finally #2: He says it is intended for Retribution to get twice as many procs as normal. My personal assumption is that this happens through the Seals of Command talent. The bug was that Seal of Truth was giving another chance to proc it, which resulted in more than two chances.