I can remember a feature that links a Confluence page to a JIRA issue when using the square brackets.
When I wrote the following text in the description or comment field of a JIRA issue, JIRA generated a link to the corresponding Confluence page of the same space (identified with the space key):
[my confluence page title]
If I want to use another space, I had to add the space key in front of the page title:
[OTHERSPACE:my confluence page title]
But this feature doesn't work anymore. Is it because of a missing plugin? Or because of a wrong configuration? Do we need an extra Application Link configuration?
Note: We moved from JIRA OnDemand to a self-provided JIRA standalone installation.