I've tried every version of Firefox for Amazon Fire TV and cannot pin a website to save as a bookmark. When I type in a website and try to hit the pin button (which is always grayed out) it just deletes the site from the search box. This happens on the latest version of Fire TV and also on Android TV boxes (mi box s). Any ideas? This is my first try of this software so I can't say if it worked on previous versions of Fire TV firmware.