Changing worker subdomain breaks workers

I just used the Workers->Overview->Account Details->Subdomain function to change the custom subdomain for my workers. The form itself worked but now all my workers are broken - they are no longer accessible under the old OR new subdomains. I get “DNS address could not be found” errors.

I did notice that there’s a section inside each worker’s “Routes” where the subdomain is explicitly shown, and there was a period where this was listed as in progress. It’s now been “Active” for over an hour but the new URL still doesn’t work. Is there a specific time period this should take?

Note: It went through. It took about 3.5 hours. Mentioning it here in case that means there was something wrong in some way.

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