The goal is to use a custom filter to get sub-tasks of a team-managed project visible on the backlog, board or roadmap functionalities.
Since there was no configuration available I have tried a custom filter with the following JQL query:
issuetype in (subTaskIssueTypes())
When I apply the custom filter nothing appears, meaning, no sub-task was found.
I have investigated other threads that suggest these filters and tried to apply other queries and it continues not to work.
In alternative, I looked for a company-managed project and there is a configuration available to allow to select the issue types one would like to include on the "type" standard filter. How can I do that in a team-managed project to avoid setting up the custom filter? If that do not work, how can I setup a custom filter that actually works?