Call to a member function defaultable_sections() on a non-object

Found the following Fatal error on one of the view pages (which I've opened accidentally):

URL: /admin/structure/views/ajax/rearrange/tracker
but it happens on any view (whether enabled or disabled).

Error:

Fatal error: Call to a member function defaultable_sections() on a non-object in docroot/sites/all/modules/contrib/views/includes/admin.inc on line 3392

Backtrace: menu_execute_active_handler/call_user_func_array/views_ui_ajax_form/views_ajax_form_wrapper/drupal_build_form/drupal_retrieve_form(views_ui_rearrange_form)/views_ui_rearrange_form/

Affected code:

  if ($display->handler->defaultable_sections($types[$type]['plural'])) {

Display is NULL.

$display = &null

I think the page should return some error page instead. On the other hand, the page: /admin/structure/views/ajax/rearrange works.

I've come to that URL accidentally after JSON dump at /admin/structure/views/ajax/rearrange/foo/panel_pane_events_1/sort, then by removing last two words in order to go back from the error page.