Attach (recommended) or Link to PDF file here:
[0 NIF MODELO 30.pdf](https://github.com/mozilla/pdf.js/files/7187486/0.NIF.MODELO.30.2.pdf)

Configuration:
- Web browser and its version: firefox nightly
- Operating system and its version: linux debian

Steps to reproduce the problem:
1. Open the PDF
2. Click on the button  `Rellenar Formulario` (top right of the first page)
3. There is the pop-up "Stay... or Leave...`.

It's a bit annoying from the user pov and it doesn't make sense (nobody wants to leave the form but just reset it)

It works fine when replacing  `""` by `"#"` here:
https://github.com/mozilla/pdf.js/blob/7082ff9bf876b98fbda118cdbd6267d3c0df6948/src/display/annotation_layer.js#L483

@Snuffleupagus, you changed this few month ago:
https://github.com/mozilla/pdf.js/commit/e2b6d79dee9ffd2aba715d6b3cb8fa143d86153c

do you have some ideas ?
let container = this.container;
    if (this.quadrilaterals) {
      trigger = trigger || this.quadrilaterals;
      container = this.quadrilaterals[0];
    }
    
    if (!trigger) {
      trigger = document.createElement("div");
      trigger.style.height = container.style.height;
      trigger.style.width = container.style.width;
      container.appendChild(trigger);
    }
    const popupElement = new PopupElement({
      container,
      trigger,
      color: data.color,
      title: data.title,
      modificationDate: data.modificationDate,
      contents: data.contents,
      hideWrapper: true,
    });
    const popup = popupElement.render();
    
    popup.style.left = container.style.width;