When the running task icon is used to represent the abstract task state (e.g. in "filter by task state" menus) we should give it a an arbitrary (static) progress (say 33%).

[oliver-sanders]

When the running task icon is used to represent the abstract task state (e.g. in "filter by task state" menus) we should give it a an arbitrary (static) progress (say 33%).

Moved here from #701