Unity will show the more traditional menu bar layout (File, Edit, View, ...) in its global menu bar. Pressing F10 should open those menus.
GNOME applications are moving towards a gear menu on the right side (in ltr-layouts) of the toolbar. Evince does this as well (it has two new buttons on the toolbar that open menus: view and actions). You will see those when using GNOME shell. Pressing F10 will not open them right now.
Unity will show the more traditional menu bar layout (File, Edit, View, ...) in its global menu bar. Pressing F10 should open those menus.
GNOME applications are moving towards a gear menu on the right side (in ltr-layouts) of the toolbar. Evince does this as well (it has two new buttons on the toolbar that open menus: view and actions). You will see those when using GNOME shell. Pressing F10 will not open them right now.