@Gnobelix Thanks for the effort to help me. I already know how anchor points work, it's the basics. Now I've managed to create a bug repro case. Follow the below steps and you'll also see that there is actually a bug here. Create a new document with an artboard Create a shape with Rectangle Tool Convert rectangle to curves Insert a second artboard to the document with the Artboard Tool Move the rectangle you've created in step 2 to the new artboard Now select the Node Tool, select bottom 2 nodes of the moved rectangle. Set anchor to middle. And change the width value. See that it moves the points to the first artboard and coordinates are all wrong too. If the artboards are placed horizontally, width is not calculated correctly. If the artboards are vertical the height property is not calculated correctly.