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.
}
            this.linkService.eventBus?.dispatch("dispatcheventinsandbox", {
              source: this,
              detail: {
                id,
                name: "Keystroke",
                value: elementData.beforeInputValue,
                change: event.data,
                willCommit: false,
                selStart,
                selEnd,
              },
            });
          });
        }
        this._setEventListeners(
          element,
          [
            ["focus", "Focus"],
            ["blur", "Blur"],
            ["mousedown", "Mouse Down"],
            ["mouseenter", "Mouse Enter"],
            ["mouseleave", "Mouse Exit"],
            ["mouseup", "Mouse Up"],
          ],
          event => event.target.value
        );
      }
      if (blurListener) {
        element.addEventListener("blur", blurListener);