Pre-condition:

• A searchable multi-select custom field.
• issues using that field

1. Set up a JIRA gadget on dashboard, for instance "JIRA Issue Statistics"
2. Ask to use a multi-select custom fields as gadget statistic type.
3. Save the gadget config, and let JIRA load gadget with results on that statistic type (the multi-select custom field)
4. [] square brackets are put around the multi-select values in the gadget list result.
5. Click on one of the statistic-type URL quick searchlinks (to issue navigator)

Actual result:
Issue navigator JQL fails to find issues due to square brackets [] around the multi-select values are not escaped properly. Quick-Search fails since multi-values are not in consideration
So the incorrect generated JQL could read for ex:

project = ED AND Operation = "[Barn, Generellt]"

Expected result
Gadget result links, and Issue navigator escapes [] in JQL. Quick-search success

project = ED AND Operation IN (Barn, Generellt)