EDGE can’t copy large images using JS from/to a canvas?

Question

I have the following code, which copies pieces of the image "smoothchartshowAnalisysCopy" (500px X 250px) to the larger image (32172px X 250px).

var c   = document.getElementById('analysisFullGraph1'); 32172px X 250px
var ctx = c.getContext('2d');

var imageNow = document.querySelector('#smoothchartshowAnalisysCopy');
var ctxImageNow = imageNow.getContext('2d');


function copy(){
    var elmnt  = document.querySelector('#analysisFullGraphContainer1');
    var x = elmnt.scrollLeft;
    var y = elmnt.scrollTop;
    var imgData = ctx.getImageData(x, 0, 828, 270);
    ctxImageNow.putImageData(imgData, 0, 0);

}

It’s working perfectly with IE, Firefox, Chrome, Safari and Vivaldi, except with MS Edge. The MS Edge only copies the pieces of the image from the beginning to the position of 14000px.

In larger positions of 14000px, not even an error appears, but nothing is copied.

I couldn’t find anything in the Microsoft documentation, or anything relevant on Google.