[O] Copying actions from meeting notes with org-mactions-collect-todos-in-subtree

[donotspamthis]

Hi,

I am refering to the meeting notes workflow described in 
http://orgmode.org/worg/org-tutorials/org-meeting-tasks.html.

This is an example of some meeting notes.

    * Notes from [2017-01-02 Mo]
    ** Topic 1
    Something was discussed
    ********** TODO Action #3 A nice little inline task                  
       :#3:
    ********** END

    Something else was
    ********** TODO Action #4 Another inline task                        
       :#4:
    some details of the other inline task.
    ********** END
    ********** TODO Action #5 Somebody calls someone                     
       :#5:
    ********** END

    ** TODO Action #2 Jorge will send out meeting notes                  
       :#2:


Calling M-x org-mactions-collect-todos-in-subtree, not all the actions 
are copied to the kill ring (as I would expect).

The behavior varies depending on the position of the point when calling 
the function:
a. Having the point on Action #2, only this one TODO is copied to the 
kill ring.
b. Having the point somewhere else in the meeting notes, I get the 
“user-error: The kill is not a (set of) tree(s) - please use 
<S-insertchar> to yank anyway” (kill ring stays the same).
c. Having a region marked, the behavior is either (a.) or (b.) depending 
on the position of the point.

I am using org-mode 9.0.3 within GNU Emacs 25.1.1 (i686-w64-mingw32) and 
I did copy the custom code from the above tutorial to my .emacs file.

Can anybody tell what the problem might be or give me further hints to 
debug?

Thank you