I created a pdf for https://github.com/mozilla/pdf.js/pull/14023:
[same_fields(1).pdf](https://github.com/mozilla/pdf.js/files/7168340/same_fields.1.pdf)
The 3 checkboxes have the same name (`Check Box2`) and have the same values (`Off` and `Yes`).
In pdf.js, these checkboxes behave like radio buttons in the same group (which is wrong) because of:
https://github.com/mozilla/pdf.js/commit/1fcffe80349a98378262c8a16f7b50ff34c3fe82
Since they've the same values they must be synced: if one is checked (resp. unchecked) then all others are checked (resp. unchecked).
const { data, linkService } = this;
    const link = document.createElement("a");
    if (data.url) {
      addLinkAttributes(link, {
        url: data.url,
        target: data.newWindow
          ? LinkTarget.BLANK
          : linkService.externalLinkTarget,
        rel: linkService.externalLinkRel,
        enabled: linkService.externalLinkEnabled,
      });
    } else if (data.action) {
      this._bindNamedAction(link, data.action);
    } else if (data.dest) {
      this._bindLink(link, data.dest);
    } else if (
      data.actions &&
      (data.actions.Action ||
        data.actions["Mouse Up"] ||