We see the nameserver warnings on staging sites. This should never happen as the staging site domain/hostnames are controlled by us.
Customer cannot change the nameservers for a staging site so this error causes confusion.
Has anyone else seen this?
No, none of our staging sites show the nameserver warning.
Mine does show nameservers.
Are you using Cloudflare on your staging domain?
Dan Nope.
Does the staging domain (as configured under settings->platform) itself resolve?
No, but we'd not want that to either.
I think the main thing here is that the warning should never appear on a staging site because the nameservers are not within the control of the end user seeing the warning.
You're right it shouldn't be shown. I've asked the UI team to hide it for staging websites.
I think the reason why it is shown relates to part of the DNS hierarchy returning NXDOMAIN. If you wanted to fix it in the interim, adding the staging domain as a website should do it.