Bug: org-toggle-item on region is buggy [8.3.4 (8.3.4-93-g0d72c3-elpaplus @ /home/sindikat/.emacs.d/elpa/org-plus-contrib-20160627/)]

[sindikat@mail36.net (sindikat@mail36.net)]

`org-toggle-item` transforms a heading into a list item. It transforms a
heading with a TODO into a list item with a checkbox. It works on a
region, so intuitively it should correctly transform all headings with
TODOs in a region into a list with checkboxes. Instead, it does this:

* TODO a
* TODO b
* TODO c

becomes

- [ ] a
- [ ] TODO b
- [ ] TODO c

This extraneous TODOs should be removed.

Emacs  : GNU Emacs 24.5.2 (x86_64-unknown-linux-gnu, GTK+ Version 2.24.30)
 of 2016-06-24 on localhost
Package: Org-mode version 8.3.4 (8.3.4-93-g0d72c3-elpaplus @ /home/sindikat/.emacs.d/elpa/org-plus-contrib-20160627/)

current state:
==============
(setq
 org-id-locations-file "/home/sindikat/.emacs.d/.cache/.org-id-locations"
 org-tab-first-hook '(org-hide-block-toggle-maybe
                      org-babel-hide-result-toggle-maybe
                      org-babel-header-arg-expand)
 org-clock-persist-file "/home/sindikat/.emacs.d/.cache/org-clock-save.el"
 org-speed-command-hook '(org-speed-command-default-hook
                          org-babel-speed-command-hook)
 org-occur-hook '(org-first-headline-recenter)
 org-imenu-depth 8
 org-metaup-hook '(org-babel-load-in-session-maybe)
 org-log-done 'time
 org-confirm-shell-link-function 'yes-or-no-p
 org-image-actual-width nil
 org-present-mode-hook '(spacemacs//org-present-start)
 org-agenda-restore-windows-after-quit t
 org-default-notes-file "~/doc/notes.org"
 org-after-todo-state-change-hook '(org-clock-out-if-current)
 org-src-mode-hook '(org-src-babel-configure-edit-buffer
                     org-src-mode-configure-edit-buffer)
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-babel-pre-tangle-hook '(save-buffer)
 org-mode-hook '(#[nil "\300\301\302\303\304$\207"
                   [org-add-hook change-major-mode-hook org-show-block-all append
                    local]
                   5]
                 #[nil "\300\301\302\303\304$\207"
                   [org-add-hook change-major-mode-hook org-babel-show-result-all
                    append local]
                   5]
                 org-babel-result-hide-spec org-babel-hide-all-hashes
                 spacemacs/load-yasnippet toc-org-enable org-download-enable
                 org-bullets-mode spacemacs//org-babel-do-load-languages
                 flyspell-mode spacemacs/add-org-surrounds evil-org-mode
                 org-eldoc-load spacemacs//init-company-org-mode company-mode)
 org-archive-hook '(org-attach-archive-delete-maybe)
 org-ctrl-c-ctrl-c-hook '(org-babel-hash-at-point org-babel-execute-safely-maybe)
 org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers
                  org-cycle-show-empty-lines
                  org-optimize-window-after-visibility-change)
 org-M-RET-may-split-line nil
 org-present-mode-quit-hook '(spacemacs//org-present-end)
 org-confirm-elisp-link-function 'yes-or-no-p
 org-startup-with-inline-images t
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-babel-after-execute-hook '(spacemacs/ob-fix-inline-images)
 org-insert-heading-respect-content t
 org-babel-load-languages '((python . t) (shell . t) (emacs-lisp . t))
 org-agenda-files '("~/doc/")
 org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
 )