diff -u b/core/modules/views/views.theme.inc b/core/modules/views/views.theme.inc
--- b/core/modules/views/views.theme.inc
+++ b/core/modules/views/views.theme.inc
@@ -582,7 +582,7 @@
         }
 
         // Only bother with separators and stuff if the field shows up.
-        if (!empty($field_output) || is_numeric($field_output)) {
+        if (trim($field_output) != "") {
           // Place the field into the column, along with an optional separator.
           if (!empty($column_reference['content'])) {
             if (!empty($options['info'][$column]['separator'])) {