Do you have the "Enable proxying" flag enabled in the Domains -> Cloudflare configuration ? This whole discussion only applies if you have that flag changed. Cloudron does not touch the proxying flag if that is disabled.
When enabled, it will set the proxying flag when adding new cloudflare DNS records. This is set only when adding and in all other situations that flag is left untouched . It does this for both ipv4 and ipv6 records.