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.

link.href = this.linkService.getAnchorUrl("");
    const map = new Map([
      ["Action", "onclick"],
      ["Mouse Up", "onmouseup"],
      ["Mouse Down", "onmousedown"],
    ]);
    for (const name of Object.keys(data.actions)) {
      const jsName = map.get(name);
      if (!jsName) {
        continue;
      }
      link[jsName] = () => {
        this.linkService.eventBus?.dispatch("dispatcheventinsandbox", {
          source: this,
          detail: {
            id: data.id,
            name,
          },
        });
        return false;
      };
    }
    if (!link.onclick) {
      link.onclick = () => false;
    }
    link.className = "internalLink";
  }
  _bindResetFormAction(link, resetForm) {