405 on api/MetaDataApp

I turned off the UIFeature in production, and now some of my services show a broken call to the route below, with a 405 Method Not Allowed. Is there a way to disable this as well?

api/MetadataApp

That’s the metadata API which is required for all Vue Built-in UIs as well as Vue & Blazor AutoForm components, etc. What’s the actual feature making the request?