Pie Chart shows "Irrelevant" category in the chart in Jira dashboards

Problem

When configuring a pie chart and selecting a field in the "Statistics Type" parameter (e.g., selecting a "Status"), the resulting pie chart contains the category "Irrelevant", but the source field does not contain this data (e.g., there is no issue with the status "Irrelevant").

Causes

1. There are multiple custom fields with the same name as the one picked up in "Statistics Type" or with names that duplicate those of a standard Jira field.

   ℹ️ For example, there might be a custom field named "Status," which is picked in the pie chart configuration instead of the native status field (which contains the issue status). Generally, the "Irrelevant" category in the statistics widget appears automatically if issues in the configured filter do not have any data for the statistics type selected.

2. The relevant field has been hidden in the project's Field Configuration scheme.

3. The field selected for the gadget's "Statistics Type" is unavailable to some or all of the issues returned by the configured filter.

Workaround

Cause 1

Examine all available entries in the "Statistics Type" field and pick up another entry with the same name. Note that the entries are not alphabetically sorted (this is a known issue JRASERVER-61819 - Order Gadgets Configuration Alphabetically).

Resolution

Cause 1

Rename conflicting custom fields and make sure their names don't duplicate each other or those of standard fields. When each field has a unique name, picking it up in the "Statistics Type" is easy, as it should be possible to just type in the full custom field name in the selector to make it select it automatically.

Cause 2

Unhide the relevant field from the project's Field Configuration scheme.

Cause 3

Either adjust the filter to exclude issue types/issues from projects that don't have the "Statistics Type" field available, or adjust the custom field context to add this field to the affected project/issue type.