backplateImgUrl property nullifies the openImage parameter of .show()

[Eric-Canas]

Describe the bug
backplateImgUrl property nullifies the openImage parameter of .show()

Painterro version
v1.2.58

To Reproduce
// secondImageURL does not appears
Painterro({backplateImgUrl : imgURL}).show(secondImgURL);

// secondImageURL appears
Painterro().show(secondImgURL);

Expected behavior
// What happens when:
Painterro({/backplateImgUrl : imgURL,/ backgroundFillColorAlpha : 0.0,
defaultSize : ${width}x${heigth}}).show(this.secondImgURL);

let sheet = window.document.styleSheets[0];
sheet.insertRule(.ptro-center-tablecell { background-image: url("${imgURL}"); background-repeat : no-repeat; background-position: center center; background-size = ${width}px ${height}px}, sheet.cssRules.length);

Screenshots
When I draw it, over this image

And I save with the saveHandler the secondImgURL, I can continue with my draw the next time I open painterro with the code in Expected behavior.

However, when I simply apply this: **Painterro({backplateImgUrl : imgURL}).show(secondImgURL); ** secondImgURL does not charge:

Browser
Google Chrome version 92.0.4515.131 on Windows

[ivictbor]

@Eric-Canas Hola Eric!

Yepp, seems like the options are antagonistic for now, even did not think about use case when both could be used.

Just to clarify expected behaviour: we want to show image on top of the backplate image:

@Darktimeoff how do you think, how hard will it be to adjust the current implementation?

[ivictbor]

@Eric-Canas could you please clarify whther I understood you right by checking image above?

[Eric-Canas]

Yes, yes! Totally. What you said is totally right.