Problem with forward QUIC-serverside traffic to another VS

Hello!

I have a problem with forward traffic from VS (QUIC-proxy) to another VS (content-switching, etc) on same BIG-IP (version 16.1). It's not working.

If in the virtual server settings I set POOL directly to the backend-server - everything works fine.

If i want forward requests to another VS on same BIG-IP (even if it's a completely empty VS) - QUIC doesn't work. I tryed with different types of VS ( all of them :( ), tcp-profiles, with and without SNAT, with irule/policies, with ssl offload/bridging, with http1.1/http2 - no more ideas, nothing help.

Could I change this behaviour?

Thanks a lot!