Save image without background (using backplateImgUrl)

[MathieuSollier]

I use backplateImgUrl to put an image in the background to be able to draw on it. However, when I save, I only have my drawings WITHOUT the background.

Painterro version E.g. v1.2.78

Code Here is my code, for the moment I get the base64 from the saveHandler and I put it in an online viewer.

Painterro({ id: "painterro", colorScheme: { main: '#fdf6b8', control: '#FECF67', }, backplateImgUrl: "data:" + selectedFile.file.mime_type + ';base64,' + selectedFile.data, toolbarPosition: "top", saveHandler: function (image, done) { console.log('done:', done) console.log(image.asDataURL()) } }).show()

Screenshots What I drew :

What I saved:

Info Chrome Version 106.0.5249.61 node : v14.0.0 npm : 6.14.4

Is there something I haven't seen?

Thank you in advance for your answer.