It looks to me like you are running into the same issues as described in bug 209520; if you cannot mount the share and gvfsd-smbbrowse doesn't see it, gvfsd-network will never see the shares in the first place.
It looks to me like you are running into the same issues as described in bug 209520; if you cannot mount the share and gvfsd-smbbrowse doesn't see it, gvfsd-network will never see the shares in the first place.