No, unfortunately no response on Firefox Dev Edition (43.0a2 on Linux). No errors in Javascript console.
Digging in a bit more, it looks like the input #file-input is display:none. Displaying it and then clicking it produces the desired file select window.
Digging in a bit more, it looks like the input #file-input is display:none. Displaying it and then clicking it produces the desired file select window.