Issue Summary

"Pie Chart" gadget fails to produce a jql when field name contains space and brackets: "CustomField [Name]

Steps to Reproduce

1. Create a test Select List (single choice) custom field named System [Location] and add a few options.
2. Create several test issues and set each one with different values of this custom field.
3. Add a Pie Chart gadget to a dashboard, set the Statistic Type to System [Location], and save the gadget.
4. Click on any slice in the pie chart and review the JQL that is generated.

Expected Results

JQL with the desired issue should be visible

Actual Results

JQL is getting failed with an error Field 'System' does not exist or you do not have permission to view it.

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available