User OAuth tokens in OpenShift 4

Issue

• How to change / delete the user token for connecting to an OpenShift 4 cluster?
• User token is not changed after deleting the useroauthaccesstoken related object.
• Command oc whoami --show-token and command oc get UserOAuthAccessToken shows different token.
• When doing an oc logout, the token from the OpenShift web console used is no longer valid, even if the expiration was not yet passed.

• Invalid token error after using oc logout command:

  error: The token provided is invalid or expired.