As a workaround I executed as root
cd /usr/share/glade3/pixmaps cp /usr/share/icons/hicolor/index.theme . gtk-update-icon-cache -qf /usr/share/glade3/pixmaps/hicolor/
Not really sure why it worked but I found out looking at strace output.
As a workaround I executed as root
cd /usr/share/ glade3/ pixmaps icons/hicolor/ index.theme . icon-cache -qf /usr/share/ glade3/ pixmaps/ hicolor/
cp /usr/share/
gtk-update-
Not really sure why it worked but I found out looking at strace output.