If I have a sub-task, it appears as a pretty two-line field like:

parent issue KEY-num
(arrow) summary of the sub task

Except I don't care which issue is its parent and would rather save space. The visual layout is particularly jarring if you have a bunch of root tasks and sub tasks mixed together.

Please give me a way to change my issue navigator to only show the true summary field, not extra stuff about the parent task.