Issue Summary

When creating a linked issue from More -> Create linked issue, Jira Service Desk always defaults the Link Type option to causes, which is taken from the Problem/Incident link type created by JSD from Issue Linking administration page.

This can be seen in the HAR file where the request explicitly looks for 'causes':

this.$element.find("label[for='issuelinks-linktype']").text("Created issue");
this.$element.find("label[for='issuelinks-issues']").text("Linked issues");
this.$element.find("#qf-field-issuelinks .description").text("Search for issues to link to from the one you\'re creating.");
this.$element.find("#issuelinks-linktype").val("causes")}

If 'causes' does not exist in the Issue Linking administration page (deleted or modified by the user), Jira defaults to show a blank option.

The behavior of first defaulting to 'causes' and subsequently defaulting to blank if 'causes' cannot be found is not consistent with the option that appears on other issue linking methods (Eg: Jira issue creation, where it defaults to the first item on the Issue Linking administration page).

Environment

Jira 8.1.0

Steps to Reproduce

1. Navigate to any Jira Service Desk issue and click on More -> Create linked issue.
2. Observe that the Created Issue option defaults to 'causes'.
3. Navigate to Issue Linking administration page and delete 'causes' (Problem/Incident)
4. Navigate back any Jira Service Desk issue and click on More -> Create linked issue.
5. Observe that the Created Issue option defaults to blank.

Expected Results

We expect Jira to default to the first item on the list instead of blank.

Actual Results

Jira defaults to blank.

Workaround

A workaround is to create a new link type and ensure 'causes' is Outward Description or Inward Description. This would default the option to 'causes'. However, no workaround exists yet to default to the first option on the list to make it consistent with other issue linking method in Jira.