I just noticed this today when my browser updated to 136.0.1 (64-bit). In the Picture attached you can see the tab width changing when playing any audio that brings up whatever that audio symbol is officially called. This also happens when you mute a tab. When unmuting a tab or stopping audio the tab goes back to the regular size. Is there any setting in the about:config that could stop the resizing of the tab or any setting at all to not have this happen? Additional info: I have set browser.tabs.tabMinWidth to 140 in about:config. This setting has been this way for years and those tabs with the audio never resized until today.