Jurgen Klopp, who tasted defeat for just the second time in his fledgling reign, was not happy with his side's performance, but questioned the decision to rule out Moreno's strike, although the flag had gone up long before the full-back dispatched the ball.
Asked what had gone wrong, Klopp said: "Nearly everything, I would say. The start, the middle and the end. I don't know.
"This was obviously not a really good football game, and that was 50 per cent because of Newcastle and 50 per cent because of Liverpool FC.
"It was an open game with no rhythm from our side. We were not creative enough, so we had no chances.
"We got this goal - it was something like a Christmas present or whatever. We made our goal, but because we weren't good enough today, the linesman thought, 'Don't make world-class goals if you play this s***'.
"The second goal I'm not interested in, it was a counter attack and that's normal. So we have to take this game and think about why it happened. That's not the biggest issue in the world."