The origin server instructed Cloudflare to bypass cache via a Cache-Control header set to no-cache , private , or max-age=0 even though Cloudflare originally preferred to cache the asset. BYPASS is returned when enabling Origin Cache-Control. Cloudflare also sets BYPASS when your origin web server sends cookies in the response header.
I would check to see if any of those conditions are met
In case someone hits the same issue, the solution is to use a CNAME record on root instead of an A record, and point it to the onrender.com subdomain related to your project.