It already did that for an empty title; the issue was with a title that was not empty, but contained only invisible Unicode characters (there are a number of such -- Unicode is very extensive and flexible).

(Min-width is also already present, but doesn't ensure the tab is visible when inactive/unhovered if it has neither a visible icon or title; it'll just be some blank space in the tab bar.)

As it happens, a patch is just landing that will handle more cases of "invisible but non-empty" titles, so that change should appear in a couple of months or so once it works through the release channels.