Or maybe they took the line out because they finally realized that Rose was smart and resourceful enough on her own to know which way to go, without Jack telling her.
That shot looked absolutely awful in the 2023 IMAX 3D version. Exhibit A in the case for allowing filmmakers to tinker with VFX shots in their old films.
I can't speak for every theater, but the one I saw it in definitely presented it in 2.35. Cameron released Avatar in multiple aspect ratios, so it's entirely possible the same was done for the Titanic re-release.