I'm having problems exporting a PCB layout to a PDF.  The image produced in the exported PDF file is much larger than image shown on the canvas - it appears that the Zoom 1:1 ratio is not working as expected or I have missed something in the export process.  I'm sure I've done a PDF export before with no problems - the PDF image was exactly the size expected.  Any ideas?
            
                        
            
                                    
              
                Electron
                  7.1.14
                OS X
                  10_16_0
                                EasyEDA
                  6.5.15