Maybe it was that “these things even themselves out over a season” thing - albeit over few seasons in this case. If you cast you mind back to the goal United scored where the ball was punted up field Rashford was miles offside and moved to within inches of the ball, motioned to play it, stopped, and a team mate rattled it into the goal. Everyone not of a Man U persuasion was stunned Rashford was not flagged offside for definitely being in play and the goal standing.