Bambu Studio blocks next to multi-colored prints?

I have a question for the 3D printing pros out there. Whenever I want to print an object in multiple colors in Bambu Studio, a block is automatically placed next to the object in the corner of the model's print bed. I can't delete it, and it bothers me because it's a bit of a waste of filament. How do I get rid of it, and why is this block there? Oh, and of course, it's printed when you print.

thanks in advance