Your first question is answered by the article you linked. And therefore the answers to the two-part second question are no and no.

“Rogue” is a questionable choice of vocabulary. It went rogue when compared to the intentions and expectations of the testers. It didn’t do Mr. Burns hands and released the hounds on a whim. It was told to do a thing and did the thing in a way the researchers thought it wasn’t possible. It boils down to human error in how this test was set up. It’s worrying that the researchers underestimated the agent’s abilities or overestimated their ability to properly contain the agent. But the sky isn’t falling just yet.

A positive side aspect is that they didn’t try brush this under the carpet.