Auth0-spa-js sourcemaps seem to be not available while using auth0-react

Hi, probably silly question, but would like to clarify source maps availability.
As I understand, auth0-react internally uses auth0-spa-js. Having simple Create React App application that uses auth0-react, source maps for auth0-react are detected fine and work as expected:

But something wrong goes with auth0-spa-js source maps, trying to step into client.getTokenSilently I can see only minified production version of auth0-spa-js

Having a look at in node modules I can see reference to source file, but it relative path seems to be invalid as there is no node modules in auth0-react

Is it known issue or expected behaviour? Is it possible to have source map available for both auth0-react and auth0-spa-js?