Still kinda new to Sketch so forgive me if this has an obvious answer. I create an image - let’s say I’m making an icon - with lots of shapes, including lines. I select all the shapes and group them. Then, when I scale them larger or smaller as a group, the lines all stay the same size. How do I get the lines to scale with the rest of the shapes in proportion?
You can use rectangle if you want to scale with your group and constraints. Also i suggest you to use rectangle because lines can be sit in half pixels. These are the ones that came to my mind. Maybe there are others who can suggest better ideas.
There is a difference in scaling with the pointer and scaling with the Scale feature (Layer → Transform → Scale). The latter scales everything proportionally.