Haproxy tcp linger option

Need to set up haproxy for game server.
If game breaks connection with proxy, the game should show a notifications that connection is lost. If we break connection with proxy, game connection is lost. If we disconnect from backend, it’s not losing connection. We think it’s most likely “option nolinger” in haproxy but we added it and it didn’t help. Who can help with that? Apparently, the last packet supposed to be RTS instead of fin/ack.