Last access_token not in user meta

Hi Jonathan,
first let me say thank you very much for this plugin! I use it to log in users to WP via my Keycloak server and retrieve the access_token in my Angular custom elements from the WP user meta “openid-connect-generic-last-token-response” via WP ajax to authorize calls to my system.
This works like a charm, except that the access token in the user meta does not appear to be updated. Only when the user logs in, the access_token is updated.

My question is, is this the correct way to retrieve the access_token in the frontend and how can i get the refreshed access_token?