LEGO fans are extremely passionate and look into details of any slight changes that the LEGO Group introduces in all aspects. The latest visual change on the instruction booklets has led a few fans delighted and curious, especially on identifying when these first started to show up.
While we don’t know exactly when the first mass produced set it was introduced in, most fans agree that it started to appear in instruction booklets for most sets produced in 2022. The simpler design of the progress bar is LEGO round stud on a thick line that extends from edge to edge at the bottom of the printed page. The more fun looking ones are represented by Minifigures sliding across the timeline from one page turn to another.
Click to learn more about the progress bar in instruction booklets