Attach (recommended) or Link to PDF file here:
[multiple.pdf](https://github.com/mozilla/pdf.js/files/6344777/multiple.pdf)

Steps to reproduce the problem:
1. Write something in a field

What is the expected behavior? (add screenshot)
The 3 fields must have the same value

What went wrong? (add screenshot)
The 2 other fields are empty

The three fields share the same name `Text3`.
It works as expected in Adobe and Chrome.
const { items } = detail;
            while (selectElement.length !== 0) {
              selectElement.remove(0);
            }
            for (const item of items) {
              const { displayValue, exportValue } = item;
              const optionElement = document.createElement("option");
              optionElement.textContent = displayValue;
              optionElement.value = exportValue;
              selectElement.appendChild(optionElement);
            }
            if (selectElement.options.length > 0) {
              selectElement.options[0].selected = true;
            }
            storage.setValue(id, {
              value: getValue(event,  true),
              items: getItems(event),
            });
          },
          indices() {
            const indices = new Set(detail.indices);
            const options = event.target.options;
            Array.prototype.forEach.call(options, (option, i) => {
              option.selected = indices.has(i);
            });
            storage.setValue(id, {
              value: getValue(event,  true),
            });
          },
          focus() {