In list view, without filter or sort order subtasks can be expanded and collapsed. As soon as filter / sort is activated, the amount of subtasks are shown, but one has to go into the taks to view the subtasks. This was apparently this was fixed but though I have the latest version of the app, I am still experiencing the same problem. It would be great to expand the subtasks in list view regardless.
(Display subtasks on List view when project is filtered/sorted)