Steve Morison bemoaned Cardiff City's "soft underbelly" and called for his team to show more fight in the face of adversity.
The Bluebirds are yet to come back to win a game after going a goal down and the 2-0 defeat at Millwall was the latest example. Morison's side conceded two soft goals, the first from a set piece and the second, right at the death, following a lapse in concentration from City's defence.
Cardiff had their chances, with shots from Sheyi Ojo and Mark Harris hitting the post either side of half-time, but Millwall were good value for the win.