VIDEO : Mark Ruffalo Posts Pic Of 'Avengers: Endgame' Stars Behind-The -Scenes

Mark Ruffalo posted a pic on social media which showed some of the cast of Avengers: Endgame on set.

More proof we took the 'no phones' rule to heart while on the set of #AvengersEndgame.

According to Business Insider, the actor was poking fun of the stars brazenly disobeying Marvel's strict no-cameras rule on set.