We've been regularly using Cloud Run with custom domain mappings, mapping to a proxied URL from Cloudflare. The mappings and DNS records are managed in Terraform.
As of the last week or so, the domain mapping handshake from Cloudflare to GCP no longer completes. It used to take 1-2 hours, now it never finishes.
We've made no changes to our flow, and nothing has changed on the Cloudflare side. However one thing that has happened is the deprecation of Google Webmaster Tools UI (which we used to use to verify domains) for Google Search Console. We had to re-add our domains to that UI and re-add the SAs as owners.
The switch to Search Console leads me to believe something has not carried forward correctly under the hood of Cloud Run's domain mapping, since that is the only thing that has changed.
