[O] Date ranges displayed in the agenda

[Manuel Wiesinger]

Hi,

when a headline starts with a date range, in the agenda it is displayed
as part of the headline . When a headline starts with an normal date,
the date is not displayed. For is example the following

* <2017-08-23 Wed>--<2017-08-24 Thu> Test range
* <2017-08-23 Wed> Test date

is displayed like this:

Wednesday  23 August 2017
  testing:    (1/2):  <2017-08-23 Wed>--<2017-08-24 Thu> Test range
  testing:     Test date
Thursday   24 August 2017
  testing:    (2/2):  <2017-08-23 Wed>--<2017-08-24 Thu> Test range

Personally, to me as rather new user, this feels inconsistent. Is it
expected behaviour or a bug?

I experienced this with Org mode version 9.0.9 and 8.2.10. To make sure
it's not configuration I checked with emacs -q.

Manuel