Submitted upstream at https://github.com/neovim/neovim/pull/2997

diff -u -r ../neovim-master/src/nvim/os/job.c ./src/nvim/os/job.c
--- ../neovim-master/src/nvim/os/job.c	2015-07-10 16:11:13.000000000 -0400
+++ ./src/nvim/os/job.c	2015-07-11 17:00:34.310021574 -0400
@@ -445,7 +445,7 @@
     return;
   }
 
-  if (WIFSTOPPED(stat) || WIFCONTINUED(stat)) {
+  if (WIFSTOPPED(stat)) {
     // Only care for processes that exited
     return;
   }