I use QtCreator on Linux (Debian Xfce, Xubuntu Xfce, didn't tested on KDE/Gnome thought) and I noticed that icons inside QtCreator are the default one. When I change my icon set changes are not reflected inside QtCreator.
Not only inside QtCreator but also in treewiev, that displays QFileSystemModel icons are the default one.

Do I miss something obvious or is it bug?
My icon's set are in global path, /user/share/icons

Thanks for any suggestion.