If I create an autolayout frame from another object, like a layer frame or image I don’t want 8px margins added to the image. The chances of me wanting to have an a frame that happens to have 8px margins to all sides are very low, and will almost never happen. Please stop adding this as default or make it an option not to have this.
Additional comment:
I feel this is similar to how when you copy and paste a layer directly, it will be pasted in to exactly the same place as original and is not moved somewhere random as some design software used to do. ( Illustrator I think used to do this.) So it’s the same here, the design software shouldn’t add some arbitrary values to layers.