Not working for ambiance theme Rated 4 out of 5 stars
This is not working when using Ambiance/Radiance themes with Gnome Shell (these are the themes from Ubuntu unity)
Do you know if there is any way to fix that ? The titlebar disappear when using F11 but not when using gnome full screen...
HTitle works like gtk-window-set-hide-titlebar-when-maximized method in GTK3  by default. And your problem looks very strange.
Does Evince hide title bar on your system? And how HTitle works with enabled "legacy-mode" checkbox? And your Ambiance theme is theme for GTK or Mutter (windows manager)?