Starting this discussion in order to ask for attention towards the ticket of the bug linked below, meant to highlight the fact that a lot of teams that are using Next Gen / Team-managed projects are dealing with overhead due to the lack of a simple yet essential functionality: filtering subtasks by sprint.
The initial issue has been reported in 2019 and yet we are still lacking a fix.
Initial bug: https://jira.atlassian.com/browse/JSWCLOUD-18394
Kindly asking the Jira team to review and fix this issue.