This is a design decision and hence won't be changed in Greybird. There are other themes installed in Xubuntu by default which show the arrows, e.g. Bluebird and Albatross, which you can easily use instead.
This is a design decision and hence won't be changed in Greybird. There are other themes installed in Xubuntu by default which show the arrows, e.g. Bluebird and Albatross, which you can easily use instead.