Affinity Designer 1.8.3
See the attached SVG file. If i open it with other apps, e.g., Google Chrome, Inkscape, LightBurn, it opens correctly. See the attached screen captures from each of those apps and note the the path I indicate. When opened in Affinity Designer, the path indicated is incorrectly positioned as shown in the screen capture from it. I did a "select all" to highlight all of the elements of the drawing. Should be easily reproducible.
GiftBox.svg