Attach (recommended) or Link to PDF file [here:] Can't see how to attach a pdf here, but it is simple to create. Add a form object textbox to a pdf and make sure the option for "Multiline" is true.

Steps to reproduce the problem:
1.  Open a document with a Textbox that is set to Multiline.
2. Attempt to hit the Enter key to go to a new line.

What is the expected behavior? The cursor goes to a new line.

What went wrong? It does not go to a new line.

Link to a viewer: It can be reproduced on mozilla.github.io/pdf.js

I corrected the issue by altering the pdf.js file like this
element.addEventListener("keydown", event => { 
[...]
--} else if (event.key === "Enter") {
++ } else if (event.key === "Enter" && !this.data.multiLine) {

Our initial testing is coming through clean, and hopefully something like this code can be committed to the project in the future.

);
    for (const inkList of data.inkLists) {
      
      
      
      
      let points = [];
      for (const coordinate of inkList) {
        const x = coordinate.x - data.rect[0];
        const y = data.rect[3] - coordinate.y;
        points.push(`${x},${y}`);
      }
      points = points.join(" ");
      const polyline = this.svgFactory.createElement(this.svgElementName);
      polyline.setAttribute("points", points);
      
      
      polyline.setAttribute("stroke-width", data.borderStyle.width || 1);
      polyline.setAttribute("stroke", "transparent");
      polyline.setAttribute("fill", "transparent");
      
      
      this._createPopup(polyline, data);
      svg.append(polyline);
    }
    this.container.append(svg);
    return this.container;
  }
}
class HighlightAnnotationElement extends AnnotationElement {