BUG: unwanted ":" in org agenda tags-todo result lines

[Rainer Stengele <rainer.stengele@online.de>]

Hi,

Emacs  : GNU Emacs 25.3.1 (x86_64-w64-mingw32) of 2017-09-17
Package: Org mode version 9.1.13 (release_9.1.13-763-g2621db @ c:/Users/rstengele/AppData/Roaming/.emacs.d/org/lisp/)

I configured a minimal Emacs startup file as here

--8<---------------cut here---------------start------------->8---
(add-to-list 'load-path "~/.emacs.d/org/lisp/")
(require 'org)
(global-set-key "\C-ca" 'org-agenda)

;; test specific settings
;; (setq org-complete-tags-always-offer-all-agenda-tags t)
(setq org-agenda-files '("~/org/bug-agenda.org"))

(setq org-agenda-custom-commands
       '(("H" "tags-todo"  ;; standard Aegis view
	 ((tags-todo "ACTIVE")))))
--8<---------------cut here---------------end--------------->8---

The file "~/org/bug-agenda.org" contains the following:

--8<---------------cut here---------------start------------->8---
* TODO todo 1                                                                                                   :ACTIVE:
   SCHEDULED: <2018-05-25 Fr>
* TODO todo 2                                                                                                   :ACTIVE:
   SCHEDULED: <2018-05-25 Fr>
--8<---------------cut here---------------end--------------->8---

Starting with "emacs.exe -Q -l ~\mini-init.el"

the resulting agenda is this:

--8<---------------cut here---------------start------------->8---
Headlines with TAGS match: ACTIVE
   bug-agenda: TODO todo 1 :                                             :ACTIVE:
   bug-agenda: TODO todo 2 :                                             :ACTIVE:
--8<---------------cut here---------------end--------------->8---

Please look at the ":" after the 2 todo lines. I do not know where these are coming from and consider them unwanted.
Can someone please recreate and try to fix this please?

Thank you.
Regards, Rainer