When I go to a website that requests access to my webcam and/or my microphone (and I grant it), a tiny popup comes up over the tab bar. That's fine. But when I close the tab using either or both, the popup doesn't go away. It doesn't contain the mic and/or cam icon(s) anymore, just the Firefox logo, but it doesn't go away and, oh my, it is so annoying. The attached images are (1) the popup when I am using my mic in a tab, and (2) the popup when I am no longer using neither mic nor cam anywhere but the popup is still visible. I can only remove the Firefox-icon-only popup by restarting Firefox! How do I solve this? Is this a bug?