First of all, I know this question seems very common. I know the /usr/share/icons/Humanity/places
folder. So this is not exactly about it.
On a fresh install, when you open Nautilus, you see your Home folder. It has several default folders with special icons, such as Downloads, Music, Pictures, etc. They are also bookmarked, so that you can see them on the sidebar. Actually two different icons are displayed : in the main panel, this is the places/64/folder-music.svg
that is displayed. In the sidebar, this is places/16/folder-music.svg
I deleted this Music folder. I created it again, and customized the icon using /usr/share/icons/Humanity/places/64/folder-music.svg
But in the sidebar, the icon is a resized version of this one, not the 16
version !
How can I recreate the original behaviour?