Focus Property No Longer Works For File Widget

As of version 1.3.15.2 the focus property no longer works for file widgets:

local dlg = Dialog { title = "File Focus" }
dlg:file {
    id = "myFileWidget",
    label = "File:",
    filetypes = { "png" },
    basepath = app.fs.userDocsPath,
    focus = true,
}
dlg:show { wait = false }

I mentioned it in another thread, but the file widget UX goes a long way towards custom open file routines that can be done in a few key presses.