They appear to be moved around because the original creator [didn’t] put the text boxes in intuitive places. It’s instinct to read from top to bottom of both text bubbles are centered at the same spot.
Forrest Gump is one of the many stories that could use two viewpoints from both the guy and the girl like they did in 500 Days of Summer or The Affair. It’s much easier to sympathize with someone when you get to see the story the way they experience it.