/openapi throws 406 when Accept header is sufficiently complex

When accessing /openapi endpoint via Chrome, the following Accept header is sent:

Accept : text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9

This should return a yaml document, as */* is acceptable, though lower priority than, say, text/html.

This currently returns a 406 error.