Are you reporting a bug or runtime error? -> BUG

react-select doesn't respect aria-describedby as prop. This results in for errors not being pronounced by screen readers when focusing back on the field.

 <AsyncSelect onChange={handleSelect} loadOptions={loadOptions} placeholder={placeholder} inputId={id} aria-describedby="id-of-another-element" />

Example:
https://codesandbox.io/s/react-select-v5-sandbox-forked-i1vu1l