diff --git a/src/infrastructure/markup/view/PHUIRemarkupView.php b/src/infrastructure/markup/view/PHUIRemarkupView.php
--- a/src/infrastructure/markup/view/PHUIRemarkupView.php
+++ b/src/infrastructure/markup/view/PHUIRemarkupView.php
@@ -24,6 +24,7 @@
 
     return PhabricatorMarkupEngine::renderOneObject(
       id(new PhabricatorMarkupOneOff())
+        ->setPreserveLinebreaks(true)
         ->setContent($corpus),
       'default',
       $viewer);