[O] need help with repeated tasks (won't reapeat)

[Gregor Zattler]

Dear org mode users, I have problems with a repeated task.  I
want to clean something round about every 60 days.  I set up this
task in order to monitor my cleaning:


*** TODO Clean it
DEADLINE:<2018-08-12 So +.60d -9d>
:PROPERTIES:
:LAST_REPEAT: [2018-05-30 Mi 16:01]
:REPEAT_TO_STATE: TODO
:END:
:LOGBOOK:
- State "DONE"       from "TODO"       [2018-05-30 Mi 16:01]
- State "DONE"       from "TODO"       [2018-03-26 Mo 16:47]
:END:


But when I do a C-c C-t (org-agenda-todo) with point on the
heading or on the corresponding line in the agenda, the task
switches simply to DONE and that's it.  It doesn't switch back to
TODO, the deadline is not shifted:

*** DONE Clean it
DEADLINE:<2018-08-12 So +.60d -9d>
:PROPERTIES:
:LAST_REPEAT: [2018-05-30 Mi 16:01]
:REPEAT_TO_STATE: TODO
:END:
:LOGBOOK:
- State "DONE"       from "TODO"       [2018-05-30 Mi 16:01]
- State "DONE"       from "TODO"       [2018-03-26 Mo 16:47]
:END:


I would expect the TODO State to shift back to TODO and the
deadline base date to be shifted by 60 days from today.


My problems persist if I test this with emacs -Q with these two
versions of emacs and org-mode

GNU Emacs 25.1.1 (x86_64-pc-linux-gnu, GTK+ Version 3.22.11) of 2017-09-15, 
modified by Debian
Org-mode version 8.2.10 (release_8.2.10 @ /usr/share/emacs/25.1/lisp/org/)

GNU Emacs 27.0.50 (build 4, x86_64-pc-linux-gnu, GTK+ Version 3.22.11) of 
2018-08-17
Org mode version 9.1.9 (release_9.1.9-65-g5e4542 @ 
/usr/local/stow/emacs-snapshot/share/emacs/27.0.50/lisp/org/)


and with this newer org mode version but with my configurations
loaded:

GNU Emacs 27.0.50 (build 4, x86_64-pc-linux-gnu, GTK+ Version 3.22.11) of 
2018-08-17
Org mode version 9.1.13 (release_9.1.13-898-gab1f77 @ 
/home/grfz/src/org-mode/lisp/)



Since this is really basic usage I assume no bug but some error
on my side.  What am I doing wrong?



Ciao; Gregor
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