OpenWrt 19.07.0 first release candidate

Hello and thanks. I managed to have my routers working with rc1 BUT sometimes the log reports:

Wed Nov 20 21:01:50 2019 daemon.info dnscrypt-proxy[2173]: dnscrypt-proxy Refetching server certificates
Wed Nov 20 21:02:05 2019 daemon.err dnscrypt-proxy[2173]: dnscrypt-proxy Unable to retrieve server certificates

When this happens I'm unable to pass https://www.cloudflare.com/ssl/encrypted-sni/
the router fails the SecureDNS test.
I started from factory image, then I installed in this order: wget ca-certificates luci-ssl dnscrypt-proxy getdns adblock luci-app-adblock stubby
It always worked without problems in other versions... Any ideas?
Thanks