From 32cd76227867f1658e78cd078b25ea2e9dbc6d91 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Sun, 20 Nov 2016 15:49:52 +0100
Subject: [PATCH] Always send columns list as array (unsetting items makes it
 an object with numeric keys)

---
 program/steps/mail/func.inc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/program/steps/mail/func.inc b/program/steps/mail/func.inc
index 4ab1d3b1c..07f12ef5f 100644
--- a/program/steps/mail/func.inc
+++ b/program/steps/mail/func.inc
@@ -463,7 +463,7 @@ function rcmail_js_message_list($a_headers, $insert_top=false, $a_show_cols=null
         $smart_col = rcmail_message_list_smart_column_name();
     }
 
-    $OUTPUT->command('set_message_coltypes', $a_show_cols, $thead, $smart_col);
+    $OUTPUT->command('set_message_coltypes', array_values($a_show_cols), $thead, $smart_col);
 
     if ($multifolder && $_SESSION['search_scope'] == 'all') {
         $OUTPUT->command('select_folder', '');