The rule was changed at the beginning of 2018 to allow defenders to drop off tackles before the last remaining player pinches the ball.
Sydney Roosters coach Trent Robinson claims referees find it hard to judge, echoing calls from Warriors coach Stephen Kearney last month.
NRL of Football Graham Annesley admits it will be re-assessed.
NRL COVERAGE POWERED BY MACHINERY HOUSE - IN A LEAGUE OF THEIR OWN