The browser tab is blank, and unless I’m doing something wrong there is no Favicon set for Lemmy.World. I would hazard a guess that most of us have lots and lots of tabs open at any given time. Would it be possible to add an icon to help make it easier to locate lemmy.world tabs?
I’m the person who reported that. As a temporary workaround I’m using the Favicon Switcher extension (with a smaller file). You have to do it per Firefox instance; the settings aren’t synced.