Cloudflare Dynamic DNS error when using proxy

[Stealthbird]

I've noticed that when using Cloudflare Dynamic DNS service that for some reason it fails and error for clients which have the proxy set enabled when rc.dyndns.update is run.

/rc.dyndns.update: phpDynDNS (unifi): PAYLOAD: {"success":false,"errors":[{"code":1004,"message":"DNS Validation Error","error_chain":[{"code":9003,"message":"Invalid 'proxied' value, must be a boolean"}]}],"messages":[],"result":null}

However, if I edit/force update, it works.

/services_dyndns_edit.php: phpDynDNS (unifi): (Success) unifi updated to **IP REDACTED**

Any idea what the issue is here.
If you ask me, it looks like when rc.dyndns.update runs it is sending an incorrect parameter and the Cloudflare API is throwing back the error.
Does anyone else have this issue?