#1554 Sort is incorrect in conjunction with filters

[Leo]

It seems that sorting does not respect filters.
I.e, if items are hidden, then they are still part of sortings like priority.

This affects nested task structures where some (e.g inactive) children have high priories
and task coach when set to filter by priority (incorrectly?)
puts low-priority parents on top of high priority parents.

Steps to reproduce:
Create nested tasks like below and sort by priority:

Task Priority
Parent_1 1
- child_1 5
Parent_2 2
- child_2 2

now set child_1 as 'inactive' and the other tasks as active.
(e.g set planned start date to be in the future)
now filter out 'inactive' tasks.

Now it looks like this:
Parent_1 1
Parent_2 2
- child_2 2

But it seems incorrect. Parent_1 should be at the bottom since it has no active tasks with higher priority.
I.e, It seems it should look like this:
Parent_2 2
- child_2 2
Parent_1 1

thoughts?

[Leo]

btw, I'm using Linux Fedora 20, Taskcoach 1.5.0