With the release of 6.2 I read a lot of comments on the different threads. Several issues are listed. One was that Ribbons waste vertical space.

Tabbed toolbar waste vertical space

With default settings the standard toolbar need 110 px vertical space (menubar + 2 toolbar height), tabbed toolbar need 100 px and groupedbar compact 72 px. So the default toolbar need most vertical space.

Difference in height (with GTK3 backend)

110 px for standard toolbar need most vertical space cause the default icon size is 24px (large icons) and you have two toolbars and the menubar

for standard toolbar need most vertical space cause the default icon size is 24px (large icons) and you have two toolbars and the menubar 100 px for tabbed toolbar cause the default icon size is 16px (small) and you don’t need an menubar.

for tabbed toolbar cause the default icon size is 16px (small) and you don’t need an menubar. 72 px for groupedbar compact need the same vertical space than single toolbar.

Yes MSO Ribbons need a lot of vertical space, which is an issue on laptops. Therefore you can show the tabbs only. In LibreOffice we have different UI’s for different workflows, but also for different screen’s. For example on your 32 inch office screen you’d like to work with standard toolbar but on mobile you prefer tabbed compact toolbar (which will be released with 6.3).

On windows the difference between LibreOffice tabbed toolbare and MS Office ribbons is

94 px vs. 110 px

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