Comment 1 for bug 1725620

> I expect the tab bar to be hidden when only one tab is open.

That's gnome-terminal's standard behavior anyway, and there's no officially documented way to change that. There's only a hidden setting to show the tab bar even when only a single tab is present.

I don't think it would make sense for such hidden setting to apply to the non-fullscreen state only, and remove the tab bar on fullscreen (but only if a single tab is present, if more tabs are present then keep them; plus also keep the menu bar as per the docs).

The doc says "If you have more than one Terminal tab open, the tab bar will be visible in the fullscreen mode" which is... yeah misleading for this particular case but mathematically speaking a correct sense.

Anyway, it's a hidden, undocumented feature, and as such, I don't think it makes sense to talk about the documentation's correctness.

A quite different thing that could perhaps make sense (as a feature request, not bug) is to always hide the menubar and tab bar in fullscreen.