From v.88 to v.89, the favicon in tabs with playable/playing content has been replaced by a play icon. It isn't an improvement to me but a downgrade to firefox awesome UI: Favicon is the main element that permits the fast identification of a tab, '''the fact that a new tab contains some playable content is not relevant enough to replace the favicon with a playable icon, and the fact that a tab is playing something also is not relevant enough to replace the favicon with a playing icon.''' Is there any customizable option that I've missed that could allow me to return to the old way of displaying playable/playing content? If not, might it be something coming in the next updates?