OAuth authentication problem with REST API in JIRA 5.2

For JIRA 5.2 in order for authentication to be successful, the oauth parameters have to be included as URL parameters. For JIRA 6+ it doesn't matter whether the oauth parameters are included as URL parameters or as parameters in the post body.

The tutorial here https://developer.atlassian.com/display/JIRADEV/JIRA+REST+API+Example+-+OAuth+authentication makes no mention of the parameter requirement and says 5+.