[CONFSERVER-12742] JIRA Portlet Macro displays portlet twice

The JIRA Portlet Macro displays the portlet twice.

Please see screenshots attached.

Workaround for Confluence 2.9.x (as described in a comment below)
The fixed plugin needs to be included in the next Confluence release (2.10), but users are free to upgrade to it now (this version is for Confluence 2.9.x versions only).
1. download the jar at https://maven.atlassian.com/contrib/com/atlassian/confluence/plugins/confluence-jira3-plugin/2.8.1.3/confluence-jira3-plugin-2.8.1.3.jar
2. upload it in the "plugins" administration section

is duplicated by

CONFSERVER-12774 JIRA Portlet Macro still breaks Breadcrumbs

CONFSERVER-12908 Jiraportlet macro displays JIRA's portlet twice

CONFSERVER-13127 Importing a jira calendar through the use of the jiraportlet macro results in 2 calendars and a broken xml tag.

is related to

CONFSERVER-10875 JIRA portlet macro is not displaying the name of the project lead.

No work has yet been logged on this issue.