I have attached a short video to illustrate the issue. In the initial configuration, where no branch source has been configured, some credentials won't show in the credentials dropdown. I investigated the request, and see that the `serverUrl` parameter in fillCredentialsIdItems request is blank. Then, after I saved the configuration and reconfig the plugin again, the missing credential shows, with the fillCredentialsIdItems request filled with proper `serverUrl` value: "https://bitbucket.org". I'm using the Bitbucket cloud.