OAuth2 access tokens can vary in size
A change was pushed yesterday that may have changed the size of some OAuth2 access tokens. For future reference, OAuth2 access tokens have no defined maximum size; our tokens may increase (or decrease) in size as we change the information encoded within. We strongly recommend not applying a size limit for token storage, as it could result in issues in the future.
If you have any questions, please reach out to our support team or post in the oAuth section of our forums.