[O] Org-mode 9 repeat schedule in item disappear with deadline

[毛晓伟]

I use the spacemacs, in org-mode 9，under TODO item，I set "SCHEDULED: 
<2016-12-06 Tue 10:00-17:00 +1d> DEADLINE: <2016-12-09 Fri 18:00 -2d>"，press t 
, Done，and the 'SCHEDULED:' is disapear, only DEADLINE: <2016-12-09 Fri 18:00 
-2d>，I don't know why ?Anyone meet the problem ?

when I try emacs -Q from terminal, used or-mode 8, all works well, maybe it's a 
bug for org-mode 9 ?