Missing 'aliases' key definition in views_views_data

How to reproduce:
Just add a header.

Well, just add any item...

If working with ajax this goes wrong.

@dereine deactivate JS on the browser.

If working with ajax this goes wrong.

Exactly the other way around: it seems the error doesn't show.

First i have to say that the error is gone with the commit in #5 (1b903708db62e9c6e5544a5687c7ac6a74fdc140) and if i remove it the error is back again (tested in two different computers with totally diferents Drupal install).
Something i noticed: the 'aliases' key still will go through the foreach loop in views_fetch_fields (line 4863) but becouse this key is not defined (is supposed to be optional) it will be written to this entry "Error: missing @component" (you can test this with var_dump), what's that supossed to mean?

Well, i think we're dealing here with two things:
One is the 'aliases' situation (by the way i attach a var_dump picture) as explained in #6.
The otherone is the Notice: Undefined index area in views_ui_add_item_form (see picture in #0). The problem is that depending on what views_object_types returns the key 'type' is gonna be present or not:

  $types = views_object_types();
  $ltitle = $types[$type]['ltitle'];
  if (!empty($types[$type]['type'])) {
    $type = $types[$type]['type'];
  }

let's say $type is header (i want to add a header) then after this code $type = 'area' and then

$types[$type]['ltitle'])

There is no 'area' key for the $types array!

Posting patch for Notice: Undefined index area in views_ui_add_item_form.