I have a very simple Nexus 9000v test set up with two leaf switches and a single spine with an EVPN VXLAN configuration. A single L2 VNI is configured and is using BGP ingress-replication. The spine switch is configured with an NVE interface because I wanted to test the new multi-site capabilities available in 9.2.1 in a BGW on spine topology.
With the spine running NX-OS 9.2.1, encapsulated traffic appears to be dropped by the spine switch when the VNI in question is configured as a member on the NVE interface with BGP ingress-replication. The same configuration appears to work perfectly when the spine is running 7.0.(3)I7.
Signalling appears to be working correctly even when traffic is not being forwarded. I see the expected sets of Type 2 and Type 3 routes and I see the source leaf correctly encapsulating both unicast and BUM traffic.
Topology and configs attached.