This article explains hiding the create subtask button on an Issue Matrix.
An issue matrix panel generally provides a “+” button to create subtasks, as shown in the screenshot below.
We can remove the create subtask “+” button using Custom JQL mode by using the JQL query,
parent = currentIssue()
Find the screenshot below for the reference configuration:
Once we place the above JQL in the JQL section and save the configuration, the create subtask button will not appear on the issue matrix panel. This can be verified from the screenshot below.
