Plugin:

Classic Connector for Salesforce & Jira

Question:

Search or Fetch (in Visualforce) Operation Returns Empty or Incorrect Results

Answer:

Reindexing the JIRA instance may help.

This is due to some operations modifying the configuration of your JIRA instance can result in the search index becoming out of sync with JIRA's configuration.

For more details, refer to the Atlassian documentation