You need to group Jira linked issues by types and preserve clickable links to Jira.
Solution
Switch the page to the edit mode.
Insert the Table Transformer macro and paste the table or the macros outputting tables within the macro body.
Select the macro and click Edit.
In the Presets tab select Custom transformation and click Next.
Enter the following SQL query:
SELECT
FIRST(T1.'Linked Issues'->split("-")->0) AS 'Type',
FORMATWIKI(SUM("[" + T1.'Linked Issues' +
"|https://jsd.stiltsoft.com/browse/" + T1.'Linked Issues' + "]\\ ")) AS 'Issues'
FROM T1
GROUP BY
T1.'Linked Issues'->split("-")->0