Printing mediaSize not being used with printers on Windows

I opened an issue about mediaSize not being used on Windows #5176. I am very grateful to have gotten such a quick response, and while the gist provided does work, changing the print from using pdf_path to using any printer does not seem to work. I’ve tried both microsoft’s print to pdf and physical printers.

win.print({
  'printer':'Microsoft Print to PDF',
  'mediaSize':{
    'name': 'CUSTOM',
    'width_microns': 241300,
    'height_microns': 104648,
    'custom_display_name':'Letter',
    'is_default': true},
  "marginsCustom": {
    "marginBottom":54,
    "marginLeft":0,
    "marginRight":28,
    "marginTop":32},
  "marginsType":3
})

I am on NW.js v0.16.0 and Windows 10.

[Christywl]

I can reproduce this issue on Windows 10 with nwjs-sdk-v0.21.5, the output pdf is always A4.

[behigh]

Any updates on this issue?