Same Name but Little Differents, Game Maker 1.8.4 and Game Maker 2

Hello everyone, I recently downloaded a sample that I already had, and it all started with the behavior of that sample, which got me thinking about it. As you can see in the programming topic tree, I already have a project. I downloaded an example for it, but what I saw surprised me. The thing was that while the example worked fine in Game Maker 1.8.4, it was buggy in the advanced version called Game Maker or Game Maker 2. I was surprised because logically, shouldn't a higher version open...

Same Name but Little Differents, Game Maker 1.8.4 and Game Maker 2