Problem

The API query for returning values for a custom field does not work for Custom field dropdown Category and works for other custom field.

For more details on this API, you can refer the link below.
https://developer.atlassian.com/cloud/jira/platform/rest/v3/api-group-jql/#api-rest-api-3-jql-autocompletedata-get

Environment

API

Steps to Reproduce

#Create a custom field Category( dropdown), add values to it.

1. RUN API Query in instance as below

   https://<your site>.atlassian.net/rest/api/3/jql/autocompletedata/suggestions?fieldName=Category
   

   Replicable in my instance
   https://arunajohny.atlassian.net/rest/api/3/jql/autocompletedata/suggestions?fieldName=Category

   {"results":[]}

   https://arunajohny.atlassian.net/rest/api/3/jql/autocompletedata/suggestions?fieldName=Category1
   [

   {"value":"cat1","displayName":"cat1"}

   ,

   {"value":"cat2","displayName":"cat2"}

   ,

   {"value":"cat3","displayName":"cat3"}

   ,

   {"value":"cat4","displayName":"cat4"}

Expected Results

The API with custom field category should return values

Actual Results

The API with custom field category is not returning any values

Workaround

(Add a workaround, if available)

Notes