isValidating field is true when debouncing, even when validation could be skipped synchronously

[lookeey]

I'm having a field day with this library, it's without a doubt the best form library I've ever seen.
I'm particularly fond of the async validation functions that are available in the fields, with built-in debouncing. One problem that I noticed in a specific use-case which I believe should happen to other users is the following:
I have a validation to be performed to check if a field is a duplicate in the API. So to save resources, I only call the API when the field is valid, and apply debounce, displaying a loading state when isValidating is true. The thing is - the loader is displayed even when I don't have to call the API (field is not valid yet). Is there anything I can do now to prevent that behavior? setting onChange validator doesn't help because I don't want to display the error until the field is valid or the user submitted.