Hi Gif, could you please create a GameMaker Studio 2 version of your textures? It often happens to me that I encounter packs that aren't compatible with how GameMaker 2 handles them. The reason GML isn't good with textures like yours is that it interprets the first tile as an empty tile, which can be annoying to fix in big packs like yours.
P.S. I would be happy if you had a GML pack like those for Unity and Godot.