Probably no times. Although I did notice a bit of a blitz last year, or the year before where they penalised "sleepers", players standing between the defensive line and the play of the ball, and also I can recall (not exact instances) where players held onto the 'marker' or 'defender' and were either penalised or had tries denied - often though moreso in try scoring movements referred to the video referee.
The referees are inconsistent, and not good enough for sure, but when it goes to the video referee he can't think - hmmm, Clark would have got that, Hayne wouldn't have, the majority wouldn't have, therefore try. He's got to govern by the rule book.