Try as Mark Ruffalo may to stay quiet, those loose lips just won’t quit, though at least he’s gotten some popularity out of it.
It’s true, the Hulk actor has had some doozies over the last several years, from accidentally live-streaming the opening scene of Thor: Ragnarok at the world premiere (though because his phone was in his pocket, you could only hear what was happening) to spoiling the ending of Avengers: Infinity War during a TV interview to even dropping a tidbit about Captain America’s fate in Avengers: Endgame.