Currently, users can see tasks they can't necessarily edit. This becomes a problem in scenarios like dragging and dropping tasks. In particular, dragging and dropping is defined as "can do this list or not" - despite what individual policies items may have - and this causes a bucket of problems for users.

Fixing this involves making the javascript layer aware that certain items can not be dragged and dropped and not just the whole list.

(This is some fallout from T7094.)