The fix for #6901 ( e276994 ) appears to have broken support for modules that provide ondemand TLS, such as https://github.com/tailscale/caddy-tailscale

This issue was previously fixed in #6328 but the commit linked above reverts that change. I have tested starting Caddy with the following config after reverting the changes to automation.go, and it appears to still work fine, so I don't think any changes to that file were required to fix #6901

{
	on_demand_tls {
		ask http://localhost:9123/ask
	}
}

https:// {
	tls {
		on_demand
	}
}

Originally posted by @jonaharagon in #6901

in summary - tracking hadExplicitManagers within an AutomationPolicy does not break the config above, and also fixes external certificate provider modules