Sorting on admin/content table is incorrect

I tested this out.

On a fresh install from HEAD, yes, the content listing page was not sorting on the sortable columns.

After a fresh install and applying the patch, the columns sort.

wd!

Committed to HEAD. Thanks!

Have installed the 7.x-dev (2010-Aug-29), seems there is a regression:

1. Install 7.x-dev (2010-Aug-29), with standard profile
2. Create two articles in order, Test1 & Test2
3. In the URL, http://www.example.com/admin/content?sort=desc&order=Updated, expected order should be:

Test2
Test1

But the order showed:

Test1
Test2

4. Have further checked the node.admin.inc, the $nids returned are in correct order, so there must be some codes which altered the order after that query

  $nids = $query
    ->fields('n',array('nid'))
    ->limit(50)
    ->orderByHeader($header)
    ->execute()
    ->fetchCol();

  var_dump($nids); // Showing correct order, i.e. (2, 1)

#8 is true, see the attachment for proof. Changing the title to reflect the bug.

The bug lies in the form system.
Check the patch at #847852: Table Sort Doesn't Quite Sort

Restoring issue status. The problem experienced in #8 is caused by another problem. This is handled in #700380: Regression: Tableselect sorting is altered if '#weight' is not set.