Was there an offside? The referees disallowed Sterling's goal due to a questionable offside

In the final match of the English League Cup, Liverpool and Chelsea are facing off at Wembley Stadium in London.

The first half ended in a scoreless draw, although the spectators did witness one goal. In the 33rd minute, Raheem Sterling tapped in a shot from Nicolas Jackson, but the match referee, Chris Kavanagh, overturned the goal after reviewing the video replay due to an offside.

According to the match official, Nicolas Jackson, who assisted Sterling, was in an offside position at the moment of the pass to him.

Was there an offside? Fans' opinions on this matter predictably varied.