The inability to filter subtasks when set to "Expand All" is really frustrating. Setting subtasks to "show separately" from the parent task is the only way to do this which destroys any form of organization I was originally trying to achieve.
The ability to show/not show certain subtasks based on filtering is a basic function that is critical for various systems and processes to work properly for both businesses and individuals. 10000000% needed.
After reviewing Future Requests related to this issue, it's something the community has been asking for since 2019 (Going on THREE YEARS). Seems like a fairly simple yet effective feature that would eliminate a lot of frustration for many of us.