The Jenkins wiki plugin for jenkins-plugin-info automatically suffixes a -plugin onto the jiraComponent setting.

e.g.

{jenkins-plugin-info:cloudbees-plugin-gateway|jiraComponent=cloudbees-plugin-gateway|sourceDir=cloudbees-plugin-gateway}

Creates a link to Open Issues - i.e. it is searching for a component "cloudbees-plugin-gateway-plugin"

This is a problem - as the component in JIRA is only "cloudbees-plugin-gateway"

The most expeditious way to fix this is to rename the component in JIRA to "cloudbees-plugin-gateway-plugin" - other solutions are possible but would entail rewriting a lot of pages in the wiki to have the full names of the plugin (i.e. change jiraComponent to be the full name, and then change every other plugin to have -plugin suffix included).

A keen script writer could use the Confluence API to do this if it was deemed appropriate. The jenkins-plugin-info macro would need to be updated prior.