Inconsistent handling of multi-line properties

[Hanno Perrey <hanno@hoowl.se>]

Hej,

I have noticed that properties that stretch over multiple lines using 
the :value+: syntax are ignored by org-element-property and therefore 
also by e.g. org-export-get-node-property when exporting to ics via 
ox-icalendar.el (see example below). I was wondering now whether this is 
intentional and to be expected or a bug?

* heading with multi-line property
:PROPERTIES:
:LOCATION: Someplace
:LOCATION+: Some Street 5
:LOCATION+: 12345 Small Town
:END:

#+begin_src emacs-lisp
(org-entry-get (point) "LOCATION")
#+end_src

#+RESULTS:
: Someplace Some Street 5 12345 Small Town


#+begin_src emacs-lisp
(save-excursion
   (goto-char (point-min))
   (org-element-property :LOCATION (org-element-at-point)))
#+end_src

#+RESULTS:
: Someplace

#+begin_src emacs-lisp
(save-excursion
   (goto-char (point-min))
   (org-element-property :LOCATION+ (org-element-at-point)))
#+end_src

#+RESULTS:
: 12345 Small Town


Thanks and cheers,

Hanno