In our "UMA V2 demo" sample app environment, we have OpenAM configured with OAuth and UMA providers, along with a couple of uma_protection agents (UMA resource servers) and uma_authorization agents (UMA clients) – where in one case the same agent serves in both roles.
A variety of user (resource owner and requesting party) interactions that result in policy setting, resource access, requests for access, denial of access attempts, etc. would be expected to show in the History log (not sure if policy setting would show?). Nothing is being produced, however.
(I'm pretty sure that previously I've seen History being populated successfully.)