API Endpoint Request and Response Parameters are no longer showing all of a sudden

I just noticed today that all of a sudden, request and response parameters are no longer showing up in the API endpoint documentation pages. There were no recent changes to our OAS file. Previously, all of our endpoints rendered request and response parameters on the readme.com generated site, so this is a recent breakage.

I checked that uploading our OAS file to another OpenAPI documentation generator (swagger.io) correctly renders the API endpoint request and response parameters. I also manually double checked the OAS file to see that the request and response parameters were correctly documented according to OpenAPI specification (we are using open api 3.1.0). I double checked all of the settings page on readme.com to ensure we didn't disable some kind of setting. What am I missing?