In libreoffice 3 the sidebar only showed the styles; afterwards a change was introduced, letting the sidebar show one of 4: properties, styles, gallery, navigator.
Unfortunatly, every time libre office is started the sidebar shows the properties.
I'm not interested in seeing the properties, I'm interested in seeing the styles, and I don't matter properties, gallery and navigator.
However, even if I unselect them, at next libreoffice launch everything is reset and I see again the properties.
I think the user must be given the freedom to permanently disable what he/she don't want to see in the sidebar.
*** This bug has been marked as a duplicate of bug 67770 ***