Hi,
it should appear in the routing table of other leaf nodes, advertised in the overlay-1 VRF. So you have any fault present under your L3out?
here's what I've to on one of my leaf as an example:
1.2.3.0/24, ubest/mbest: 1/0
*via 10.0.18.95%overlay-1, [1/0], 00:01:48, bgp-65000, internal, tag 65000
Nicolas