Great add-on! Is there a way to customize the title of the new window? It currently starts with the URL - {title}

I use the WindowTitler add-on (https://addons.mozilla.org/en-US/firefox/addon/window-titler) to add a prefix to my Firefox windows, but the keyboard shortcut to bring up that extension doesn't work in these "popup" windows. Having a way to access that extension would be a workable way to (manually) fix the titlebar.