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.

const { data, linkService } = this;
    const link = document.createElement("a");
    link.setAttribute("data-element-id", data.id);
    let isBound = false;
    if (data.url) {
      linkService.addLinkAttributes(link, data.url, data.newWindow);
      isBound = true;
    } else if (data.action) {
      this._bindNamedAction(link, data.action);
      isBound = true;
    } else if (data.attachment) {
      this._bindAttachment(link, data.attachment);
      isBound = true;
    } else if (data.setOCGState) {
      this.#bindSetOCGState(link, data.setOCGState);
      isBound = true;
    } else if (data.dest) {
      this._bindLink(link, data.dest);
      isBound = true;
    } else {
      if (
        data.actions &&
        (data.actions.Action ||