user search in the reporter field not working as expected if the *com.atlassian.jira.ignoreBrowseUsersPermissionsInUserPickers.disabled* dark feature disabled

Issue Summary

user search in the reporter field not working as expected if the com.atlassian.jira.ignoreBrowseUsersPermissionsInUserPickers.disabled dark feature disabled

This was reproduced in 5.12.4

This is reproducible on Data Center: yes

Steps to Reproduce

1. Integrate jira with Active Directory/LDAP
2. Now try creating some users.
3. Search for the users in the "Reporter" field with their last name or some partial name but not the complete name

Expected Results

The users matching criteria should be displayed without issues as the bug: Customer cannot be set to reporter within Jira interface has been fixed in 5.12.3

Actual Results

The users are not searchable with their partial names without having the com.atlassian.jira.ignoreBrowseUsersPermissionsInUserPickers.disabled dark feature enabled

Workaround

• Refer to How to manage dark features in Jira and disable this feature flag: com.atlassian.jira.ignoreBrowseUsersPermissionsInUserPickers
  1. Navigate to <BASE_URL>/secure/admin/SiteDarkFeatures!default.jspa
  2. Enter com.atlassian.jira.ignoreBrowseUsersPermissionsInUserPickers.disabled in the Enable dark feature section.
  3. Click on Add.