The main reporters in the first press conference scene change positions and outfits from shot-to-shot.
At 1:07:54 mark, during the press conference, Gabriel Byrne is sitting near Lucy (on the left of the screen), wearing a grey suit. When the shot turns to the audience of the conference, at the 1:08:03 mark, Gabriel Byrne is standing in the auditorium (also on the left of the screen) wearing a different outfit, but it is clearly the same person.
At 44:12, as Lucy and Jason approach the railing, a hand appears in the upper left corner for six frames.